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College Essays

The California Institute of Technology—or Caltech, as it's more commonly known—is a highly exclusive college. If you want to join the Beavers, you'll need not just top grades and standardized test scores, but strong writing supplements to support them as well.

Caltech accepts around 6% of students who apply, making it an extremely competitive school . The more you know about the Caltech essay prompts before you start, the better prepared you are to answer them.

Read on to learn about 2021's essay prompts, as well as some tips and tricks for maximizing their potential to impress!

Feature Image: Canon.vs.nikon /Wikimedia Commons

BREAKING: Caltech Application Changes Due to COVID-19

As a result of the novel coronavirus pandemic, many colleges have made the decision to at least temporarily stop requiring SAT and ACT scores. In June 2020, California Institute of Technology announced that they will stop considering SAT and ACT scores of applicants for the next two admission cycles (those applying in fall 2020, 2021, and 2022). This means that, not only are SAT and ACT scores not required, but, even if you submit them, they won't be reviewed and they won't be considered as part of your application. (This is what we refer to as a "test blind" policy.) Additionally, international students can now meet Caltech's English proficiency requirement by submitting either TOEFL or Duolingo scores.

Because of SAT and ACT cancellations , as well as the difficulty some students are having preparing or paying for the tests, Caltech made the decision to temporarily stop requiring standardized test scores to make admissions as fair and equitable as possible. Because test scores aren't being considered, there will be an increased emphasis on classes students took and the grades they received in them.

What Do I Need to Know About the Caltech Essays?

Caltech accepts four different applications: Coalition, Common App, Powered by Scoir, and Questbridge. In addition to the required Coalition,  Common Application, and powered by Scoir essays, Caltech also requires three short essays. ( Questbridge applicants only need to write these if they become Match Finalists and have ranked Caltech.)

You’ll write one required academic question and three required short answer questions, but you’ll also have the option to answer three supplemental short answer questions and one supplemental academic question, if you want.

Altogether, you'll be writing up to 1100 words for the required essays, and 300 words for the optional short answer questions. These essays are fairly short, so you'll want to spend a good amount of time honing your argument to its most efficient. Start early so you have plenty of time to plan, refine, revise, and proof before you submit!

Do a little preparation and you can look this happy when writing your Caltech essays, too!

What Are the Caltech Essay Prompts?

The Caltech essay prompts are fairly standard, though each one is tailored to the college's specifications. You'll see the usual "Overcoming Obstacles” and “Defining Your Fit” essay questions, but always keep in mind that you're applying to Caltech specifically, and your essays should reflect that.

Required Academic Question

Because of the rigorous core course curriculum, Caltech students don't declare a major until the end of their first year. However, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore. If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest? (Max: 200 words)

The first essay asks you share your academic passion (or passions), and how you discovered them. Many colleges understand that students change their majors throughout the course of their careers, and Caltech doesn’t want you to have to choose a major until you’re a sophomore. But they still want you to have a good idea of what you want to focus on and why it matters to you.

The key here is to be specific about your area of interest. Note that they don’t mention a major, but instead an overall field. In other words, now isn’t the time to say that you want to major in biology because you’ve always done well in school. Instead, focus on something more specific, like a problem you want to solve or an experience that changed the way you see your career. Maybe your physical science egg-drop challenge inspired a desire to create safer structures, or maybe a field trip to a NASA location made you realize you had to be in that control room one day.

Whatever the case, be as specific as you can with what you want to study, and remember that multiple majors could get you there. For example, visiting NASA could have inspired you to study mathematics, physics, or engineering. There are multiple paths to reach the same goal; do your homework, look at the different programs Caltech offers, and choose one or two that align with your dream.

Caltech is, in their own words, “an unapologetic STEM institution.” Whatever you do, make sure that your chosen area fits within these parameters.

Required Short Answer Question #1

At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (Min: 100/Max: 200 words for each experience)

This prompt is asking you to discuss something you're passionate about. Your interests and activities outside of school and work can reveal a lot about the kind of person you are. As such, this prompt is a great opportunity to show how you exhibit the characteristics of the perfect Caltech candidate in your life experiences that don’t show up in your test scores and GPA.

Hopefully, thinking of a topic for this essay will be easy for you. You should write about a situation, story, or topic that gets you so engrossed and excited that it’s tough to tear yourself away from learning about it! Whether that’s reading up on the psychology of conspiracy theories or bird watching with your little brother, the most important thing is that you choose something that you’re deeply interested in. When you do that, admissions counselors will be able to feel your passion too!

Even though you probably could write pages and pages about the topic you choose, it’s important to keep things clear and concise here. Remember: you only have 200 words per topic to work with! To keep your essay focused, tell the story of how these experiences piqued your curiosity into the subject (or subjects) you’ve chosen to write about. You can describe your learning process, even if it’s quirky or unconventional. This is your chance to show Caltech how you choose to expand your mind when left to your own devices.

And that’s the most important thing to emphasize in your essay. Caltech is looking for students who don’t stop learning when the semester ends. The people who make a difference in the world are passionate, lifelong learners. This essay is your chance to show off your niche interests and prove to Caltech that you’re a lifelong learner too.

This guy would fit right in at Caltech.

Required Short Answer Question #2

The creativity, inventiveness, and innovation of Caltech's students, faculty, and researchers have won Nobel Prizes and put rovers on Mars , but Techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3D printing dorm decor. How have you been an innovator in your own life? (Min: 200 / Max: 250)

This question is a great way for you to show off your skills! Maybe your insight helped your school’s robotics team take home first place, or maybe you found a way to streamline some part of your family’s day-to-day routine. You have a lot of options here, but make sure to keep your topic focused on STEM-related subjects. This is an excellent topic for a problem-and-solution essay: after all, your innovation will have improved a situation, right? You only have 250 words, so you’ll need to make them count! Caltech wants to see how your mind works : why were you driven to your chosen innovation? Were there any obstacles? What was the end result, and how was it received?

Remember:  you'll need to give the admissions counselors enough information that they can understand your innovation and  its impact. Be sure to answer both parts of this question so that you're fully addressing the prompt. 

It probably wasn't one of these kids who wrote these successful Caltech essays.

Required Short Answer Question #3

The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. How do your past experiences and present-day perspectives inform who you have become and how you navigate the world? (Min: 200 / Max: 250)

This is your chance to show Caltech what makes you tick, and how you’ve become who you are. Think back on the formative experiences in your life: your home, your family, your cultural background. How have they shaped you into who you are now and what you want? Show Caltech how you see the world, and why.

As always, you should remember to gear this toward STEM as much as you can: Caltech isn’t kidding when they tell you to “lean all the way in on the STEMiest of STEMmy topics.” The trick here is to show how your own lived experiences have informed your interest and perspective on the STEM subject that you’re most drawn to. Maybe you come from a family of artists, and their sense of aesthetics informs the way you design and present your projects. Maybe you have a different cultural background than most of your peers, which influences your thought processes.

Be sure to tell a story here so that you can connect with admissions counselors. For example, was there a formative experience in your childhood or youth that made you realize you stand out from your peers in some way? Was a family member or cultural tradition particularly influential?

CalTech Short Answer Questions

Along with longer essays, you'll also have to tackle a few short answer responses, too. We'll break them down below! 

Supplemental Short Answer Question #1

If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (Max: 150 words)

This is a pretty broad prompt! Unlike Required Question 3, which asks about your background, or Supplemental Question 2, which asks about your hobbies, this is about your identity, which includes both of those things and more! You have a lot of options here: think of past experiences that made you realize more about who you are and what you stand for. Maybe you stood up to a bully. Maybe you went stargazing with family or friends, and found yourself overwhelmed by the vastness of the universe. Just like with the other prompts, remember to be as specific as possible, and give examples.

Supplemental Short Answer Question #2

When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby and why does it bring you joy? (Max: 100 words)

This is a great prompt to answer, because it gives you the chance to show the admissions counselors more about who you are not just as a budding scholar but as a person. Here’s a chance to open up about, say, your passion for rock climbing or your increasingly-large collection of succulents. You only have 100 words, but try to go into as much detail as possible about how your hobby makes you feel. This is the place to be descriptive, and to show rather than tell.

Supplemental Short Answer Question #3

Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (Max: 50 words)

You've probably got more than one hobby you love. This is your chance to share that with admissions counselors at CalTech. You don't have much space, but help your readers understand why you're passionate about the hobby you choose. 

Caltech Essays That Worked

All this information is great, but it can still be tricky to understand exactly what Caltech wants to know until you've seen it demonstrated. Check out this accepted essay—and some tips from someone who took a serious risk—to learn more about what Caltech hopes to see in your essay!

Even though the example essays below respond to old essay prompts, there’s still a lot you can learn from them about how to write successful Caltech essays.

Martin Alternburg's Essay

I cross over the bridge into Minnesota. Out of my three sports, cross country is definitely my worst — but I continue to be hooked on it. Unlike swimming and track, my motivation to run is heavily intrinsic. I live for the long runs I take on by myself. While they rarely happen during our season, we were assigned a long run to complete over our first weekend of cross country. In reality, I was supposed to go six miles, but felt eight gave me more time to explore the home I had just returned to. My mind begins to wander as I once again find my rhythm. My train of thought while running is similar to the way one thinks in the minutes before sleep — except one has more control over how these thoughts progress and what tangents they move off of. While special relativity would be the "proper" thing to think about, especially at MITES, I revive the violin repertoire I had turned away from for so long and begin playing it in my head. I'm now at the edge of town in between the cornfields. The streaming floodlights on the open road give me a sense of lonely curiosity, reminiscent of the opening lines of Wieniawski's first violin concerto. I come up with adaptations of the melody in my head, experimenting with an atonality similar to Stravinsky's.

Martin Altenburg's essay is well-structured, using the narrative of a morning run to demonstrate all the things that run through his head, and, more importantly, all the unique traits that make him who he is.

From just these two paragraphs, we know he's a runner, that he's driven, that he strives for more than he thinks he's capable of, and that he knows music and composition. Because the essay is in a narrative format, we're able to follow this line of thinking and have it all wrapped up neatly at the end. We're drawn in by energetic and purposeful writing that also delivers us all the information we need.

Throughout the essay, Altenburg discusses his interests and his growth. His strategic use of locations in his hometown allows readers to understand where he comes from both literally and figuratively, especially the part about his beliefs and how the community he's grown up in have impacted them. All this is valuable information to an admissions office, who wants to see how you see yourself and why.

One thing to note about this essay is that it doesn't include any reference to Caltech. In fact, Altenburg used the same essay to apply to—and get into—eight different Ivy Leagues as well as some other schools. The essay was likely written as part of the Common or Coalition Application rather than as part of Altenburg's Caltech supplement, hence the lack of specificity. Your essays for the Caltech supplement should contain more specificity than this, as these essays are unique to Caltech and want to know exactly what draws you to that school above others.

Michelle Fan's Essay Reflection

"How do you believe Caltech will best fuel your intellectual curiosity and help you meet your goals?" If I had a few weeks, I might have done enough research to namedrop a few professors, rave about the strength of their computer science programs, and come up with a compelling story about all my professional goals. But I didn't have those few weeks, so I told them the unembellished, wholehearted truth: I said I have no idea what I want to do in life. All I knew was that I liked making calculator games and explosions and wanted to participate in the bread-throwing, water-dumping congregations otherwise known as Caltech house dinners. As it turns out, being yourself actually works. Shocker, I know. Colleges really do want to like you for you.

Michelle Fan doesn't post her Caltech essay directly, but she does talk about her process and what she discovered between her highly planned essays and the ones she wrote the day they were due.

Fan points out that her last-minute essays, the ones that she wrote from her heart rather than from her head, are the ones that got accepted. Though I definitely don't advocate for waiting until the same day that your essay is due to start writing it, it's a good message to keep in mind—when you're faced with an imminent deadline and you just need to get something out, your writing is probably more genuine than if you've been editing and revising it for ages.

But the big takeaway here should not be to wait until the last second to write your essay (please, don't do that!). The real lesson is that you should write in a way that is true to yourself, not a way that you think will impress admissions offices. You should be authentic and genuine, letting your personality and interests tell Caltech why you're a good fit.

If your essay looks like this, that's a good thing!

4 Key Tips for Writing a Caltech Essay

Like all college essays, there are some general things to keep in mind when working on your Caltech writing supplement. The earlier you get started, the better—take a little time to make sure that your essay is as polished as possible!

Brainstorming before you start writing will help you pick a topic that's both meaningful and impressive. Jotting down a list of ideas for each topic, no matter how silly they might feel at first impression, gives you options. Spend a little time away from your options so that you can pick the one that you feel most strongly about with less bias!

#2: Get People to Read Your Essays for You

Feedback is an important tool as a writer. Getting someone else to look at your work—preferably someone who will be honest about its shortcomings—will help you find logical holes, weird phrasing, and other errors that may creep into your work. When you feel like your essays are as polished as you can make them is a good time to hand them off to someone else. Remember, you don't have to make every change they suggest exactly as they suggest it, but if your reader is confused about something, see what you can do to make it clearer!

#3: Edit and Revise

Take that feedback you got from your reader and turn it into gold. Again, don't feel like their suggestions are always the right move, but do consider what's causing their confusion or dislike for parts of your essays. Fix them in your own voice, and re-read your essay, especially out loud, to catch any additional errors. The more time you can spend revising, the better!

#4: Be Authentic

Always remember that you're not just trying to impress Caltech with a bunch of statistics—you're trying to impress them as you. That means always staying true to yourself and striving for authenticity. Give Caltech an essay that showcases what it means to be you, not an essay that gives them what you think that they want to hear.

What's Next?

Need an even more in-depth guide to how to write a college essay ? Those tips will help you write a stellar essay from start to finish!

A strong essay is just one part of a successful Caltech application. Also look into Caltech's SAT scores and GPA requirements so you can draft an effective academic plan!

Before you send in your Caltech application, it's a smart idea to figure out how much money it's going to cost you to attend. How do Caltech's financial aid offerings measure up to tuition costs?

Melissa Brinks graduated from the University of Washington in 2014 with a Bachelor's in English with a creative writing emphasis. She has spent several years tutoring K-12 students in many subjects, including in SAT prep, to help them prepare for their college education.

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How to Respond to the 2023/2024 Caltech Supplemental Essays

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Bill Jack has over a decade of experience in college admissions and financial aid. Since 2008, he has worked at Colby College, Wesleyan University, University of Maine at Farmington, and Bates College.

Maria Geiger is Director of Content at Scholarships360. She is a former online educational technology instructor and adjunct writing instructor. In addition to education reform, Maria’s interests include viewpoint diversity, blended/flipped learning, digital communication, and integrating media/web tools into the curriculum to better facilitate student engagement. Maria earned both a B.A. and an M.A. in English Literature from Monmouth University, an M. Ed. in Education from Monmouth University, and a Virtual Online Teaching Certificate (VOLT) from the University of Pennsylvania.

Deciding to go to the California Institute of Technology is the dawn of a new academic adventure! Caltech is a highly selective private research university with a 4% acceptance rate . With such a competitive application pool, your very best writing is required. In this guide, we’ll go over each prompt and help you break the Caltech essays down so you’ll know exactly what is being asked. Let’s get started!

The Caltech essays

Caltech’s supplemental essay prompts are a way for you to show the admission’s readers exactly who you are and why you should be part of the next undergraduate class. Even responding to the optional prompts (Essays #5 through #9 are optional) shows Caltech that you want to be there and are willing to go the extra mile to prove that. Remember, applicants should emphasize STEM in their essays as much as possible since that’s one of the primary focuses of Caltech. 

Keep reading below to learn more about Caltech supplemental essay prompts!

“If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest? (Max: 200 words)”

Applicants should see this prompt as an opportunity to discuss their passions in STEM or any other Caltech program. However, it’s important to discuss more than just what  your desired major is; be sure to talk about how Caltech plays a part in whatever interests are shared. What’s so unique about this major/interest that you can’t stop thinking about it? Is it daring? Are you the only one in your family to do it? Use this essay to show your drive and initiative. 

Questions to consider:

• Why do you want to study your major at Caltech?
• What is something unique about the majors that Caltech offers?
• What do you imagine when you think of studying your major at Caltech?

“At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (Min: 100 / Max: 200 words for each experience)”

Caltech is clear in this prompt that the focus is on science, technology, engineering, and mathematics (STEM). While your experiences might seem similar to other applicants, try to set yourself apart by incorporating a personal aspect to your essay. Explain to the reader where your love of STEM started or grew during your time in high school and how that might contribute to your desire to attend Caltech. 

Applicants should also explain what they want to learn more about or explore further and why. Doing so further demonstrates your interest in Caltech if you’re able to make a connection between what you’re curious about and what you love about this specific university. 

• Who motivated you to get involved in STEM? Was it a mentor or a family member?
• What about this experience made you want to pursue STEM at Caltech?
• What are you most curious or excited about in STEM?

“The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won Nobel Prizes and put rovers on Mars, but Techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3D printing dorm decor. How have you been an innovator in your own life? (Min: 200 / Max: 250)”

The definition of innovation is the introduction of something that’s never existed before. Remember, innovation doesn’t have to be some large, spectacular creation. Your innovation can be something new you’ve added to your life or doing something that you’ve never heard of. Even being the first person in your family to go to college could be a form of innovation–you just have to get creative! 

• Are you the first person to do something in your family?
• Have you created something that you think is fresh or different?
• Do you consider yourself a trailblazer? Why?

“The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. How do your past experiences and present-day perspectives inform who you have become and how you navigate the world? (Min: 200 / Max: 250)”

Use this prompt to consider how your background and/or cultural experiences have shaped your life. Have you had a chance to experience other cultures and learn from them? Has your background empowered you to further pursue STEM? These are questions you should think about as you write your Caltech supplemental essay.

The world has advanced from a collection of ideas from various different sources, so it would be good to share how a collaborative effort from people different from yourself has allowed you to grow and learn new things. Try to show your open-minded side as well as your intelligent one.

• What opinions have you formed about the world as a result of your experiences?
• How does your background influence who you are today and who you hope to become?
• What is the difference between how you navigate the world and how other applicants might?

“ Optional: If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (Max: 150 words)”

This prompt should take the Caltech admissions office on an exploration of the unknown, aka you. You could approach this essay in a unique way and push conventional boundaries. Alternatively, you could take a straightforward approach that positions you as an ideal candidate. Either way, the goal is to differentiate yourself from all other applicants, especially since this is one of the first optional essays that Caltech offers. 

• Why do you want to share this with the admissions office?
• How will this aspect of your identity make your application stand out?
• What should be the key takeaway from this optional essay?

Also see: How to write an essay about yourself

“ Optional: When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby and why does it bring you joy? (Max: 100 words)”

As an optional prompt, it may be tempting to skip over this essay. However, completing it can make your application more interesting while showing that you’re willing to go the extra mile to attend Caltech. Telling the admissions office about a unique interest or hobby reveals a lot about your personality and whether you fit in at the university. You could be especially interested in plants and bugs, which might show that your love of science goes deeper than just in the classroom. The same can be true for any other activity that you find joy in. 

The word count for this prompt is relatively short, but don’t over-generalize your interests. Just saying a particular aspect of STEM isn’t going to cut it, so try to dig a little deeper to highlight something different and new to your application. 

• What is an activity that you haven’t mentioned anywhere else in your application?
• What does this interest or hobby say about you and your personality?
• Why do you enjoy this experience? 

“ Optional: Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (Max: 50 words)” 

This prompt is for applicants that have multiple unique hobbies or interests. If you completed the initial prompt mentioned above, then don’t feel pressured to write about another hobby if you can’t think of one right away. However, you’ll have to simplify this interest a lot more than the first, so be sure to pick the most important one for the longer prompt.

• Why do you want to write about this additional hobby?
• Does this interest build on your first one and the rest of your application?

“ Optional: Have you had any extenuating circumstances regarding your coursework (such as limited course selection or disruptions) not described elsewhere in your application? If so, tell us about them here.”

Everyone doesn’t have the same journey when it comes to pursuing education. Sometimes, we hit bumps in the road, and Caltech offers this prompt for you to explain your story. Applicants don’t have to share every detail of their circumstances, but disclose enough that Caltech can understand what the conditions at the time were and how they affected you. Don’t be afraid to be vulnerable and transparent since doing so shows that you’re taking your application seriously. It can also prove your tenacity and determination if you include how you overcame this difficulty in your life and how you’ll continue to progress.

• Is there anything that you feel you need to explain about your grades or courses?
• Was there anything notable and impactful that affected your school performance?
• How have you grown or what did you learn from this experience?

“ Optional: Some Caltech applicants engage in STEM competitions locally, nationally, and internationally (such as AIME, Science Olympiad, International Science Olympiads.) If you have received any STEM honors or awards, list them here (and scores, if applicable).” 

Use this prompt as your opportunity to share your STEM accomplishments with Caltech. Don’t be afraid to include all the awards that you’re proud of! Let your accomplishments speak for themselves, and try not to exaggerate. 

There also isn’t a word limit, which can tempt you to go on and on for page after page. So, show Caltech that you still have tricks up your sleeve by giving them a small piece of what’s next. This means knowing when to bring an end to your essay, even if you haven’t listed every award.

• What are some of the awards I’ve won throughout high school?
• Why do I want Caltech to know about this specific award?
• How does this award relate to attending Caltech?

Final thoughts for applicants

As you wrap up your Caltech essays, it’s important to keep a couple of things in mind. One of the most important things is noticing word count for each prompt. A majority of the prompts are 100-200 words with only a few exceptions. This means it’s ideal to get to the main point of your essay as soon as possible. 

Potential Caltech students should also take time to read through each essay submission to check for errors or any weird issues with the flow and readability of your essays. It can be helpful to ask your teachers, peers, or family members to read over your submission and get feedback to improve on your writing and storytelling skills. The world wasn’t built in a day, so don’t overwhelm yourself! There are resources here to help.

Additional resources

Since you’re considering pursuing higher education, it’s important to have all the resources you can get at your fingertips. Check out some of these Scholarships360 links to learn more!

• Learn how extracurriculars impact your application
• Find out about fully funding your education with scholarships
• Decide on when to submit your application to college

Remember to apply for all the scholarships you qualify for while you are eligible! 

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September 14, 2023

2023-2024 Caltech Supplemental Essay Prompts

The California Institute of Technology has released its supplemental essay prompts for the 2023-2024 admissions cycle. The school, one of the last among America’s elite universities to release their essays for applicants to the Class of 2028 , asks applicants to respond to several required and optional essays as well as short answers. These essays are, of course, in addition to The Common Application ’s Personal Statement. So, what are this year’s Caltech essays and how should they be approached? Let’s dive in!

2023-2024 California Institute of Technology Essay Topics and Questions

Required academic question.

Because of the rigorous courses in the core curriculum , Caltech students don’t declare a major until the end of their first year. However, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore. (Max: 200 words)

If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest?

This essay prompt is a straight-up-the-middle Why Major essay. Caltech’s admissions committee wants to understand the origin story of an applicant’s interest in the discipline they wish to study at Caltech. Yet, students should be sure to set that origin story during their high school years. Too often, students share stories about how they developed their academic interests as children. Admissions officers want to hear how students think now — not then.

Required Short Answer Questions

1. At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe  two  STEM-related experiences  from your high school years , either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further?  (Min: 100/Max: 200 words for each experience)

Through anecdotes, this essay allows applicants to show rather than tell why they love the STEM fields. Students could write about a lab experiment from a physics course. They could write about independent research they did in engineering. The opportunities are endless — so long as the stories showcase a student’s passion for learning.

And note how Caltech’s admissions committee emphasizes that the examples should stem from high school. Remember when we said how examples should always stem from high school rather than childhood? Here, you’ll see the advice straight from the horse’s mouth.

As to the word count, students have 400 words for this essay. As Ivy Coach has long espoused on the pages of this college admissions blog , students should  always  use all of the real estate they’re given to make their case. Students should thus write up to the maximum word count of 400 words!

2. The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won  Nobel Prizes  and put  rovers on Mars . But Techers also imagine smaller scale innovations every day, from new ways to design solar cells to how to 3D print dorm decor. How have you been a creator, inventor, or innovator in your own life?  (Min: 200 / Max: 250)

This essay is another excellent opportunity for students to share one small story about how they’ve developed something in the STEM field. And the example does not need to stem from award-winning research. It doesn’t need to be anything formal.

A great example would be seeing a problem on a bike ride to school and figuring out how to fix it. Maybe a student’s bike went over a pothole, so they designed a way to light up a grid on the road to identify when potholes were forthcoming. Caltech’s admissions committee wants to see how applicants think and how they’re creators and inventors even in life’s small moments.

3. Caltech’s mission – to cultivate learning, discovery, and innovation for the benefit of humanity – relies on its community members embracing fundamental Caltech values :

• Openness and enthusiasm for having preconceptions challenged
• Respect and appreciation for the idea that, while we are all members of the same community, the opportunities we’ve had to develop, showcase, and apply our talents have not been equal
• Passion for the ideal that science can and should meaningfully improve the lives of others

Share what one or more of these values evokes for you.  (Min: 200 / Max: 400)

In this essay, through one small example, applicants should showcase how they want to explore STEM to make our world better. Too often, students express grandiose plans — like ending climate change through the power of STEM. Instead, applicants would be better off focusing on a small issue and then highlighting how they hope to address it in their lifetime. 

Optional Short Answer Questions

1. If there are aspects of your life or social or personal identity that you feel are not captured elsewhere in this application, please tell us about them below.  (Max: 150 words)

While the United States Supreme Court outlawed Affirmative Action , Chief Justice John Roberts penned a loophole in the majority opinion. As he wrote, “Nothing in this opinion should be construed as prohibiting universities from considering an applicant’s discussion of how race affected his or her life, be it through discrimination, inspiration, or otherwise.”

This essay allows students to capitalize on this loophole by sharing their stories. And students do not need to be underrepresented minorities to have a story to tell here. Applicants could focus on their faith, community, sexual orientation, or gender identity — the possibilities are endless.

2. When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby, and why does it bring you joy?  (Max: 100 words)

While having a passion for the STEM fields is a prerequisite for Caltech, the admissions committee wants to know that you have interests beyond these disciplines. So here’s an excellent opportunity for applicants to showcase their love for poetry, history, foreign language, anthropology, or any other field. As long as applicants showcase their intellectual curiosity through their storytelling — ideally in an area outside of STEM — they’re on the right track.

3. Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest!  (Max: 50 words)

We encourage students to write about a hobby that highlights their intellectual curiosity. So many options would work here. It doesn’t need to be a hobby in which a student changes the world. Yet, it should showcase their intellectual curiosity. If they love tie-dying t-shirts, they should focus on the mathematics of creating extraordinary patterns.

Optional Academic Short Answer Questions

1. Have you had any extenuating circumstances (such as limited course selection or disruptions), that have affected your coursework, but that are not described elsewhere in your application? If so, tell us about them here.

While we at Ivy Coach are  always  in favor of responding to all optional essays — because no optional essay should be considered  optional  in elite college admissions — this prompt doesn’t apply to all students

 In fact, unless a student needs to explain a disruption in their learning during their high school years that is apparent on their transcript, we encourage the student not to answer this prompt. Too many students choose to answer prompts like these, and they do indeed come across as complainers. It does their candidacy a great disservice.

2. Some Caltech applicants engage in STEM competitions locally, nationally, or internationally (eg., AIME, Science Olympiad, International Science Olympiads). If you have received any STEM honors or awards, list them here (with scores, if applicable).

Hopefully, applicants have so many STEM awards that they couldn’t fit them all in the honors section of their Common Application. Here is the place to list them. And it should be a list — not an essay. It’s always critical to adhere to the directions.

Ivy Coach’s Assistance with Caltech Essays

If you’re interested in optimizing your case for admission to Caltech by submitting essays that will wow Caltech admissions officers, fill out Ivy Coach ’s free consultation form , and we’ll be in touch to outline our college counseling services for seniors.

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How to Write Amazing Caltech Essays

Writing amazing essays for Caltech requires careful thought, creativity, and a deep understanding of what the admissions committee is looking for. Here are some key tips to help you craft compelling Caltech essays:

A. Understand the Prompts: 

Understanding the prompts is a crucial first step when writing essays, as it ensures that you address the specific questions or topics provided by the college or university. Here's how to effectively understand the prompts:

1. Read Carefully:

Take the time to thoroughly read and analyze each prompt. Pay attention to the wording, tone, and any specific instructions or requirements mentioned. Understand what the prompt is asking you to discuss or explore.

2. Identify Key Components:

Break down the prompt into its key components to grasp its core elements. Identify the main theme or subject matter, the specific question being asked, and any subtopics or points that need to be addressed.

3. Analyze the Prompt's Purpose:

Consider why the college or university has chosen this particular prompt. Reflect on what they may be looking to learn about you through your response. Are they seeking insight into your personal experiences, intellectual curiosity, problem-solving skills, or values? Understanding the purpose will help you tailor your essay accordingly.

4. Brainstorm Ideas:

Once you have a clear understanding of the prompt, brainstorm ideas related to the topic. Think about personal experiences, academic achievements, challenges faced, or lessons learned that are relevant to the prompt. Consider how these ideas align with your overall narrative or the message you want to convey about yourself.

5. Interpret the Prompt:

Sometimes, prompts can be open-ended or require interpretation. Take the opportunity to delve deeper into the prompt and explore different angles or perspectives. Consider how you can provide a unique and insightful response that goes beyond a surface-level understanding.

6. Consider the Audience:

Keep in mind that your essay will be read by admissions officers who are looking for specific qualities and characteristics in applicants. Consider how your response can showcase your strengths, experiences, and potential contributions to the college or university community.

7. Seek Clarification if Needed:

If you have any doubts or uncertainties about the prompt, don't hesitate to seek clarification. Reach out to the admissions office or consult with your guidance counselor or teachers for guidance. It's better to have a clear understanding of the prompt before you start writing.

Understanding the prompts is essential because it allows you to focus your essay and provide a relevant and meaningful response. It ensures that you address the specific aspects the college or university is interested in, and it helps you avoid going off-topic or providing generic answers. By thoroughly understanding the prompts, you can craft a compelling and well-structured essay that effectively communicates your ideas, experiences, and personal growth.

B. Showcase Your Passion for Science and Technology: 

When writing an essay to showcase your passion for science and technology, it's important to demonstrate your genuine interest and enthusiasm in a compelling and impactful way. Here's how you can effectively showcase your passion for science and technology in your essay:

1. Personal Experiences:

Start by sharing personal experiences that ignited your passion for science and technology. Discuss a specific event, project, or moment that sparked your curiosity and enthusiasm. Explain how this experience influenced your desire to pursue studies in the field.

2. Academic Pursuits:

Highlight your academic achievements and pursuits in science and technology. Discuss specific courses, research projects, or competitions you have participated in and the impact they had on your intellectual growth. Emphasize any exceptional accomplishments or awards that showcase your dedication and commitment to the field.

3. Extracurricular Involvement:

Illustrate your passion by highlighting your involvement in extracurricular activities related to science and technology. Discuss clubs, organizations, or initiatives where you actively participate and contribute. Describe any leadership roles you have held or projects you have undertaken that demonstrate your initiative and commitment to the field.

4. Research Experience:

If you have engaged in research, share details about your research experience. Describe the specific area of study, the research questions you explored, and the methodologies used. Discuss any significant findings or contributions you made to the field. This demonstrates your ability to apply scientific methods and conduct rigorous investigations.

5. Projects and Innovations:

Highlight any personal projects or innovative ideas you have pursued in science and technology. Discuss how these projects allowed you to apply your knowledge and skills, and how they reflect your passion for pushing boundaries and finding creative solutions to real-world problems.

6. Future Goals and Impact:

Explain your long-term goals in science and technology. Discuss how you aspire to make a positive impact in the field and contribute to advancements or solve pressing challenges. Highlight specific areas of research or industries that interest you and explain why they are important to you.

7. Showcasing Curiosity:

Demonstrate your curiosity by discussing how you stay updated with the latest developments in science and technology. Mention books, journals, websites, or podcasts you follow to enhance your understanding and expand your knowledge. Showcasing intellectual curiosity reveals your dedication to continuous learning.

8. Connecting to Caltech:

If you are applying to Caltech, make connections between your passion and their specific programs, faculty, or resources. Research the school's unique offerings, such as research opportunities, collaborative projects, or renowned professors, and explain how these align with your interests and goals.

Remember to convey your passion for science and technology through vivid storytelling, engaging language, and personal anecdotes. Let your enthusiasm shine through in every aspect of your essay, from the introduction to the conclusion. By showcasing your authentic passion and dedication, you can make a compelling case for why you are an ideal candidate for further studies in science and technology.

C. Be Authentic: 

Being authentic in your college essay is crucial as it allows you to present your true self to the admissions committee. Here are some key points to consider when striving to be authentic in your writing:

1. Reflect on Your Values and Experiences:

Take the time to reflect on your values, beliefs, and experiences that have shaped your identity. Consider the moments, challenges, or accomplishments that have had a significant impact on you. These insights will help you convey your authentic self in your essay.

2. Share Personal Stories:

Use personal stories and anecdotes to bring your essay to life. Be open and honest about your experiences, emotions, and lessons learned. Sharing vulnerable moments can demonstrate your authenticity and allow the reader to connect with you on a deeper level.

3. Use Your Own Voice:

Write in a way that reflects your unique voice and personality. Avoid trying to mimic a particular writing style or using vocabulary that doesn't feel natural to you. Your essay should sound like you, conveying your thoughts and ideas in a genuine manner.

4. Express Your Passion and Enthusiasm:

Write about topics, interests, or activities that genuinely excite you. Showcasing your enthusiasm and genuine passion for your chosen field of study or extracurricular pursuits will help the reader understand your genuine interest and commitment.

5. Be Honest and Transparent:

Don't be tempted to exaggerate or fabricate experiences or accomplishments. Admissions officers can quickly identify inauthentic content, and it can harm your chances of admission. Instead, focus on presenting an honest and sincere representation of who you are.

6. Embrace Your Flaws and Failures:

It's important to acknowledge and embrace your flaws and failures as part of your authentic self. Admissions committees appreciate vulnerability and the ability to reflect on challenges and personal growth. Discuss how you've learned from setbacks and how they have contributed to your personal development.

7. Stay True to Your Values:

Your values shape who you are as a person. Ensure that your essay reflects your core values and beliefs. Discuss how these values have influenced your decisions, actions, and aspirations.

8. Seek Feedback from Others:

While it's essential to maintain your authentic voice, it can be helpful to seek feedback from trusted individuals, such as teachers, counselors, or mentors. They can provide insights and suggestions to help you refine your essay while ensuring that your authentic self shines through.

Being authentic in your college essay allows you to stand out and make a genuine connection with the admissions committee. By sharing your unique stories, expressing your true passions, and staying true to yourself, you can create a compelling and memorable essay that truly represents who you are as an individual.

D. Demonstrate Fit: 

Demonstrating fit in your college essay is about showing the admissions committee why you are a perfect match for their institution. Here's how you can effectively demonstrate fit in your writing:

1. Research the College:

Before writing your essay, thoroughly research the college or university you are applying to. Gain an understanding of its mission, values, academic programs, campus culture, and any unique opportunities it offers. This knowledge will help you tailor your essay to highlight the aspects that align with your interests and goals.

2. Connect Your Interests and Goals:

Clearly articulate how the college's offerings align with your academic and career aspirations. Explain why the specific academic programs, research opportunities, or extracurricular activities at the college resonate with your interests. This demonstrates your genuine enthusiasm and motivation to contribute to and benefit from the college's resources.

3. Showcase Shared Values:

Identify and emphasize the shared values between yourself and the college. If the institution emphasizes community engagement, social justice, or environmental sustainability, provide examples of your own experiences, projects, or initiatives that reflect these values. Showcasing alignment in values helps establish a strong connection between you and the college.

4. Mention Faculty and Resources:

Highlight specific professors, researchers, or resources at the college that are relevant to your intended field of study. Explain how their expertise, research interests, or teaching methods align with your own academic interests and goals. This demonstrates that you have done your homework and are genuinely excited about learning from and collaborating with the college's faculty.

5. Relate Experiences to College Life:

Share experiences, accomplishments, or challenges that demonstrate your ability to thrive in the college environment. Discuss leadership roles, teamwork experiences, or community involvement that showcase your readiness to actively engage with the college's campus life and contribute to the community.

6. Connect with Alumni or Current Students:

If possible, reach out to alumni or current students to gain insights into their experiences at the college. Mention any conversations or interactions you've had and how those experiences solidified your interest in attending the institution. This demonstrates your proactive approach to researching and understanding the college community.

7. Show Long-Term Vision:

Articulate your long-term goals and how attending the college will help you achieve them. Discuss how the college's academic programs, internships, or networking opportunities align with your career aspirations. Demonstrating that you have a clear vision of how the college fits into your future plans can reinforce your commitment and dedication to the institution.

8. Convey Enthusiasm:

Throughout your essay, convey genuine enthusiasm and excitement about the college. Use descriptive language and specific examples to illustrate why you believe the college is the ideal place for you to learn, grow, and make a meaningful impact. Showcasing your enthusiasm will leave a positive impression on the admissions committee.

By effectively demonstrating fit in your essay, you can convince the admissions committee that you are not only a qualified applicant but also a perfect fit for their institution. Showcasing your understanding of the college's values, resources, and opportunities will help you stand out and increase your chances of admission.

E. Use Concrete Examples: 

Using concrete examples in your writing is an effective way to enhance the clarity, credibility, and impact of your essay. Here's how you can use concrete examples to strengthen your writing:

1. Provide Specific Details:

Instead of making general statements or using vague language, provide specific details and vivid descriptions. For example, instead of saying, "I had a challenging research experience," you can say, "During my summer internship at XYZ Research Institute, I conducted experiments on the effects of temperature variation on plant growth, collecting and analyzing data from over 100 samples."

2. Use Personal Anecdotes:

Share personal anecdotes or stories that support your points or illustrate your experiences. By providing real-life examples, you bring your writing to life and make it more relatable and engaging. These anecdotes can showcase your skills, achievements, challenges, or personal growth.

3. Quantify Achievements:

Whenever possible, use numbers, percentages, or statistics to quantify your achievements. For instance, instead of saying, "I contributed to increasing sales," you can say, "I implemented a marketing campaign that resulted in a 20% increase in sales within three months." Quantifying your accomplishments adds credibility and provides a clear picture of your impact.

4. Reference Specific Events or Experiences:

If you have participated in significant events, conferences, or competitions related to your field, mention them. Discuss your role, the outcomes, and how these experiences have shaped your perspective or skills. By referring to specific events, you demonstrate your active engagement and commitment to your area of interest.

5. Incorporate Research Findings or Studies:

When discussing academic topics or making arguments, support your statements with relevant research findings or studies. Cite reputable sources and provide specific details such as the authors, publication dates, or key findings. This shows that your arguments are grounded in evidence and adds credibility to your writing.

6. Draw from Personal Observations:

If you have observed real-world phenomena or trends that are relevant to your topic, share them in your essay. Provide specific examples of what you have observed, including the context, details, and any insights or conclusions you have drawn from these observations.

7. Discuss Relevant Projects or Assignments:

If you have completed noteworthy projects, assignments, or coursework, use them as concrete examples to support your claims or illustrate your abilities. Explain the objectives, methodologies, and outcomes of these projects, highlighting your skills, problem-solving abilities, or creativity.

8. Connect Examples to Your Overall Narrative:

Ensure that the examples you use align with the central theme or message of your essay. They should contribute to a coherent and compelling narrative that showcases your unique qualities, experiences, or perspectives.

By incorporating concrete examples into your writing, you provide tangible evidence of your experiences, skills, and achievements. This not only enhances the credibility of your essay but also helps the reader visualize your story and connect with your ideas on a deeper level. Remember to choose examples that are relevant, specific, and support the main points you are making in your essay.

Remember, the essay is an opportunity for the admissions committee to get to know you beyond your academic achievements. Use it as a platform to showcase your passions, values, and intellectual curiosity. Be confident in your abilities, be genuine, and let your personality shine through your essays.

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Writing the Caltech Supplemental Essays 2021-2022

Padya Paramita

August 24, 2021

If you’re planning to apply to the California Institute of Technology, one of the key ways to distinguish yourself from fellow STEM-oriented applicants is to take full advantage of the Caltech supplemental essays 2021-2022 . Use the prompts provided by this competitive Pasadena institution to show how you hope to grow as a young scientist and to describe the ways you would contribute to the Caltech campus.

The supplemental questions are designed to learn more about your interests and goals within STEM disciplines, as well as determine how you would fit in with the collaborative and creative Caltech campus. To guide you through the four Caltech supplemental essays 2021-2022 , I’ve outlined the prompts, the dos and don’ts of your responses, and more tips to ensure a successful essay-writing process.

Prompts for the Caltech Supplemental Essays 2021-2022

Describe three experiences and/or activities that have helped develop your passion for a possible career in a STEM field. (10-120 words each)

The first question in the Caltech supplemental essays 2021-2022 may just require a short response, but that doesn’t mean your answer is any less important. Think about ways to frame your three most significant activities related to science, technology, engineering, and math. Don’t be tempted by the minimum word count of “10” and just name the activities. You need to stand out from thousands of applicants who bring a lot of experience in STEM areas. In your answer, add a sentence showing how each one helped you realize that this is the field for you. If you have space, note how you have made an impact in the activity, whether you’ve involved a greater community, and how you hope to continue your STEM education in relevance to the activity. 

While you have been asked to describe three different activities, they should have some sort of connection to each other, as you don’t have enough space to go over multiple fields you enjoy. Colleges appreciate when your interests are specialized. Moreover, a connection between the three allows you to convey a more elaborate picture of yourself, letting admissions officers know exactly how you would contribute to Caltech. Think about what the combination of your chosen entries conveys about you. This could range from highlighting your teamwork skills to reflecting on your specific niche interest in STEM. Making sure your answers aren’t all over the place is a good way to stay organized when tackling multiple supplemental essays. 

Much like the life of a professional scientist or engineer, the life of a "Techer" relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (250-400 words)

Even though this question doesn’t specifically ask “Why Caltech,” admissions officers want to know that you have made a well-informed decision in applying. Your essays should be tailored to Caltech - they shouldn’t be applicable to other STEM-focused colleges such as MIT or Harvey Mudd as well. The school wants to see that you’re an ambitious individual, and they want to learn how you work in a team and where your interests within STEM lie. 400 words should be enough to get your points across, but at the same time, you have to use your allotted space wisely.

Think about your favorite topics within STEM and your biggest goals. How have you worked to achieve them so far? Mention experiences that reflect your collaboration skills. However, the majority of your essay should focus on how you hope to bring your skills to the Caltech campus, and how you hope to engage the Caltech community in your endeavors. Mention any specific courses, research opportunities, and programs that appeal to you, emphasizing how working alongside your peers in these initiatives can encourage growth and help you get closer to achieving your goals. Don’t miss out on the chance to let admissions officers see that you have done the research and know about the different opportunities available at the university. 

Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (250-400 words)

The third prompt among the Caltech supplemental essays 2021-2022 diverts from the academic approach. Admissions officers want to know how you would fit into the community. Since the question specifically mentions sense of humor and creative pranks, Caltech would appreciate any examples which showcase a playful of you. Now if you’re not the number one jokester in your high school, that’s okay. You could still find ways to depict your humorous and creative side.

Pick one or two activities that you enjoy the most - and bring up any anecdotes that portray you as a fun and creative individual. Remember to stay away from activities that you think the admissions officers want to hear. If you don’t spend your free time drawing portraits or making films don’t write about that. Nor should you say that you enjoy eating and sleeping unless you have a very unique take on these everyday activities. Think about what you like to do when you have a long weekend, or what you do when you have the most fun with your friends. Find innovative ways to bring light to a side of you that isn’t mentioned in the rest of your application. 

Download all supplemental essay prompts here!

The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech's community? (Your response should range between 250-400 words)

The word “diversity” goes beyond your background. Yes, you can be diverse in your race and ethnicity, but you can also distinguish yourself through unique activities and experiences. Since most Caltech applicants are skilled in math and science, your answer to this question can help distinguish you from peers with similar academic interests. After all, Caltech doesn’t want every single student to bring the same attributes. To brainstorm experiences that separate you from the rest of the highly talented applicant pool, you need to jot down some standout experiences you’ve had. This could range from aspects of your identity such as your ethnicity or sexual orientation to an unusual extracurricular activity or hobby, such as calligraphy or competitive eating.

Don’t use up all of the allotted space describing the part of yourself that you’ve chosen to highlight. Discuss anecdotes that clarify to the admissions officers why this quality makes you exceptional. Finally, remember the prompt: Caltech wants to know how this trait can help you contribute to the campus. You should be specific in exactly how and where you are going to contribute, instead of broadly alluding to being a valuable Caltech community member. Will this part of you help you make standout additions to classroom discussions or extracurricular activities? Your essay should focus on connecting the way your perspective has been shaped to how you can make an impact on your fellow Techers.

Additional Tips to Answer the Caltech Supplemental Essays 2021-2022

• Make Sure You’ve Done School Research - You may have noticed that the Caltech supplemental essays 2021-2022 don’t ask an explicit “Why Caltech” question. That doesn’t mean that you shouldn’t thoroughly explore the Caltech website before sitting down to write your responses. You need to know what makes the school unique and which resources call out to you the most. This knowledge will come in handy when writing your essays, as you’ll know how to tailor them to demonstrate knowledge of programs and opportunities at this prestigious institution.
• Prioritize Adding New Information About Yourself - The Caltech supplemental essays 2021-2022 are geared for the reader to get to know you better. If you repeat topics you’ve already covered in your activities list or Common App personal statement, you’ll go against the whole purpose of these essays! Make sure answers to each prompt show a new side of you that admissions officers previously did not know. This helps add depth to your application, and convince the reader more and more that you could be a good fit for Caltech.
• Be as Specific in Your Interests as Possible - Here’s the thing: everyone applying to Caltech is interested in science and math. Adding generic statements about your love for STEM as a whole is far from enough. STEM covers a huge array of topics, and each category is broad in itself. In writing your Caltech supplemental essays 2021-2022 , you need to find ways to iterate which specific part of STEM you’re passionate about. Don’t just say engineering or biology. Go deeper. Is it molecular biology? Is it marine engineering? Make sure you give admissions officers the chance to understand the depth of your curiosity and knowledge.

Caltech admissions officers want to know that you’re not just applying for the sake of attending any strong STEM school. Use the Caltech supplemental essays 2021-2022 to convince admissions officers that not only have you made a well-informed decision, but you would make valuable contributions if accepted to this selective institution.

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How to Write the Caltech STEM Experience Essay

Caltech’s essay prompt emphasizes its commitment to tackling some of the most challenging questions in STEM. In essence, they want to gauge your genuine curiosity, passion, and drive in these fields.

Here’s how you can write a strong response. If you want more advice on Caltech’s essays, see our full Caltech essay breakdown .

Understanding the Prompt

Prompt: At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (200 words per experience)

Caltech is looking for specific instances where you were actively engaged in STEM. This can be within a class, a club, a project, a competition, or any other related experience.

As you reflect on which experiences to mention, make sure to those that truly piqued your interest and drove you to delve deeper. It’s one thing to be curious, but taking that next step to learn more showcases initiative, drive, and passion.

Crafting Your Essay

Here are the four steps you want to take as you’re writing.

1. Start with a brief introduction of the experience. Was it a physics class experiment? A coding challenge? A robotics competition?

2. Elaborate on what you did. Be specific. Instead of saying you “worked on a project,” explain that you “designed a water filtration system using charcoal and sand.”

3. Identify the moment or aspect that triggered your curiosity. Was it an unexpected result? A challenging problem? A real-world application?

4. Discuss the steps you took post-experience. Did you read more on the topic? Join a related club? Undertake a new project? Your actions should showcase your drive.

Now, let’s get into some examples!

Caltech STEM Experience Example Essays

In my junior year, our school’s Robotics Club decided to enter the annual Robotics Challenge. From videos of past competitions, it was clear that robots could achieve some pretty amazing things, and we were eager to try our hand. I got the task of programming our robot’s pathfinding, which I thought would be a cool challenge.

Initial tests, however, were not promising. Our robot, which we affectionately dubbed ‘Rover’, seemed to have a mind of its own, often getting lost or stuck in corners. This wasn’t what I expected, and instead of feeling defeated, I got really curious. Why was our algorithm struggling?

After some deep dives online and discussions with our club advisor, I stumbled upon the A* algorithm. It was touted as one of the best for pathfinding. Many late nights were spent poring over code, making adjustments, and running trial after trial.

The moment ‘Rover’ smoothly navigated our test maze was unforgettable. Beyond just the success, this experience opened my eyes to how vast and complex robotics can be. It also sparked a newfound interest in AI and how machines can learn and adapt.

Essay 1 Feedback

This essay feedback was provided by Ivy, CollegeVine’s AI . Try it for free with your own essay!

This experience effectively showcases your problem-solving skills and determination in the field of robotics. Your narrative demonstrates your curiosity and passion for learning about pathfinding algorithms. I would rate this experience a solid 8.5 out of 10. The strength of your description lies in the detailed example and your genuine interest in overcoming the challenge.

• Your experience provides a clear narrative of your involvement in the Robotics Club and the challenge you faced.
• You effectively convey your curiosity and determination to understand and improve the robot’s pathfinding algorithm.
• The experience demonstrates your ability to research, learn, and apply new concepts in a practical situation.

Suggestions

• Consider providing a brief explanation of the A* algorithm and how it improved ‘Rover’s’ pathfinding. This will help the reader understand your discovery better. (Small impact)
• Share any lessons you learned from this experience and how they may have influenced your perspective on robotics or problem-solving. (Small impact)
• Briefly mention how this experience has shaped your future aspirations or interests in the field of robotics, AI, or related areas. (Small impact)

What admissions would take away

Admissions officers would view you as a determined, curious, and resourceful student with a passion for robotics and problem-solving. Your experience demonstrates your ability to research, learn, and apply new concepts in practical situations.

In a chemistry lab during sophomore year, our assignment was to synthesize aspirin. The process, on paper, seemed pretty direct, but science in practice can sometimes be unpredictable. My first result wasn’t the expected pure white but had an off-white hue.

Rather than just accepting it, I was determined to understand why. Had I missed a step or mis-measured an ingredient? I turned to additional resources, beyond our classroom’s scope, and delved into the intricacies of the synthesis process. I found out that there are many variables at play, from temperature control to precise measurements.

Armed with new knowledge, I approached the lab again. With more attention to detail and a better understanding of the reactions, my second attempt was markedly improved.

This wasn’t just a lesson in making aspirin; it underscored how deep and layered even seemingly simple reactions can be. It made me appreciate the precision required in chemistry, especially when thinking about its implications in something as important as drug development.

Overall Feedback

This experience effectively highlights your curiosity and determination in the field of chemistry. It demonstrates your commitment to understanding the underlying processes and your ability to think critically about the subject matter. I would rate this experience an 8 out of 10. The strength of your description lies in the detailed example and your genuine interest in learning.

• Your experience provides a clear narrative of your involvement in the chemistry lab and the challenge you faced.
• You effectively convey your curiosity and determination to understand the intricacies of the synthesis process.
• The experience demonstrates your willingness to go beyond the classroom to explore complex concepts and apply them in practical situations.
• Explore how your newfound appreciation for precision in chemistry has shaped your perspective on the subject or influenced future projects. (Small impact)
• Share any lessons you learned from this experience and how they may have influenced your approach to chemistry or problem-solving. (Small impact)
• Briefly mention how this experience has shaped your future aspirations or interests in the field of chemistry or related areas. (Small impact)

Admissions officers would view you as a curious, determined, and resourceful student with a passion for learning and problem-solving in chemistry. Your experience demonstrates your ability to go beyond the classroom to explore complex concepts and apply them in practical situations.

• Be Genuine: Authentic experiences where your curiosity was genuinely activated will always come across as more sincere and impactful.
• Show Initiative: Caltech values students who don’t just stop at wondering, but take the initiative to seek answers.
• Proofread: Ensure clarity, coherence, and error-free content. You can use Ivy, CollegeVine’s AI for free feedback. 

Remember, this essay provides Caltech a glimpse into your analytical mind, your curiosity, and your proactive approach to learning.

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California Institute of Technology (Caltech) 2018-19 Supplemental Essay Prompt Guide

Regular Decision: 

The Requirements: 3 long essay of 250-400 words; 3 short essays of 120 words each

Supplemental Essay Type(s): Community , Activity , Short Answer , Oddball

California Institute of Technology (Caltech) 2018-19 Application Essay Question Explanations

Describe three experiences and/or activities that have helped develop your passion for a possible career in a stem field. use the separate spaces provided below, one for each stem experience and/or activity., stem experience/activity 1 and explanation (your response should range between 10-120 words.): stem experience/activity 2 and explanation (your response should range between 10-120 words.): stem experience/activity 3 and explanation (your response should range between 10-120 words.):.

Think of this as three hyper-specific activity essays. It’s common practice for schools to ask applicants to expand on an activity that has been meaningful to them, which opens up an opportunity for you to highlight your leadership qualities and creative skills. In this case, Caltech, in its scientific precision, has asked you to write about exactly three (3) experiences or activities related to STEM (which stands for Science, Technology, Engineering, and Math, in case you didn’t know). The thing is, this is Caltech: every applicant probably has something interesting to say about this topic! So you’re going to heed to work extra hard to stand out. Although this prompt asks for three distinct descriptions, you should still think about your answers as one cohesive story where each chapter reveals something new. What connects your three experiences? Is it simply growth over time (from doing a lab in class to eventually interning in a real research lab)? Or is it more thematic (gardening, field research, and earth science tutoring)? Make those connections crystal clear to demonstrate not just intention but direction: you are clearly headed towards a promising career in STEM. Also keep in mind that Caltech asks for “experiences” OR “activities” meaning you can choose formal school activities, professional experiences, and even informal experiences.

Much like the life of a professional scientist or engineer, the life of a “Techer” relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (Your response should range between 250-400 words.)

Caltech wants to know that you’re a team player. As far as topics are concerned, any time you worked with others is fair game, so don’t restrict yourself merely to your science fair project or the dance squad. This could be the perfect opportunity to write about a professional experience (your first time working as a camp counselor!) or even community service (organizing the coat and blanket collection at your church!). Ideally, you should describe an experience that spans a decent amount of time — a few weeks or even months — so you can describe the phases of your work and the end result. What challenges did your team face? Were they internal, organizational issues? Or were there larger, external problems that you had to face as a single strong unit? In what ways were you a leader, but more importantly, how did you allow others to lead? It’s all well and good to say that you spearheaded your group history project, but remember that this question is about collaboration. A more reflective and honest essay will consider how each person’s unique contribution set the course for your team’s success (or failure). If you’re talking about a large group (singing in a 100 person choir!), perhaps you’ll want to focus on the values or goals that are strong enough to unite such a large group of people. In the end, you should be able to clearly state a lesson that you will carry with you into the future. In other words: an experience that will have a positive impact on your collaborative work at Caltech.

Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (Your response should range between 250-400 words.)

We usually caution applicants against being weird for weird’s sake, but in this case, Caltech is asking for just that! If you identify as a quirky person, you’ve probably already got an idea or two, but if you don’t, you could find yourself drawing a blank. In either case, our advice remains the same: (a) use your judgement, and (b) don’t force it. There’s a fine line between charming quirk and alienating strangeness, so stick to describing hobbies that won’t get you arrested. Take your cues from your friends and family. Does your father sigh an affectionate sigh every time you decide to ride your unicycle to school? Do your friends affectionately tell and retell the tale of the time you all tried, in vain, to do the cinnamon challenge? What do you do to entertain people? Remember, Caltech wants to know how you have fun, so it’s okay to get a little bit silly with this essay and even make fun of yourself a bit. Identifying your own quirks is, in itself, an exercise in self-awareness; the more you display this quality, the more down to earth and humble you will seem.

The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech’s community? (Your response should range between 250-400 words.)

You could look at this question as a reverse why essay. Caltech isn’t asking why you want them, but why they should want you. What will your unique contribution be? Before you start writing this essay, you’ll want to start out with some good old fashioned research. Learn about the school, what it offers and values, and what its students are like. Think about Caltech in the abstract — what is it like, and how might your presence shake things up (in a good way)? First and foremost, is there something in your background or upbringing that would make you stand out from your peers? Diversity can be defined in many ways. Typically, we think of things like race, class, political affiliation, and religion. But diversity could also speak to something unique in your lived experience. What have you done that few other people have done before? How has this affected your worldview in a way that distinguishes you from your peers?

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Your chance of acceptance, your chancing factors, extracurriculars, caltech essays that worked.

Hey, guys! I'm in the process of writing my essays for Caltech and was wondering if there are any examples online of essays that actually got accepted into Caltech? I could use some inspiration and guidance from students who managed to get in!

Hello! It's great to see you're working on your Caltech essays. While there's no definitive source of "successful essays" that got accepted into Caltech specifically, there are resources that can offer guidance and inspiration.

First, I would recommend looking at Caltech's admissions page, as they often provide guidance and context for what they're looking for in their essays. This will help you understand the values and qualities they seek in their applicants, and you can then tailor your essays accordingly.

Next, you can read example essays that have gotten students into other top-tier colleges. While these essays may not be specific to Caltech, they can still give you some perspective on what successful essays look like in terms of style, structure, and content. Forums and educational websites are great places to find these examples, just remember to not plagiarize or directly mimic any of them; your essay should be a reflection of your personal experiences and personality.

In terms of content, try connecting your essay to what excites you about Caltech's specific programs, research opportunities, and community culture. Be genuine about who you are and what you can contribute to their community. Additionally, try to demonstrate your passion for STEM subjects and showcase how you've gone above and beyond in your pursuit of scientific discovery or innovation.

Lastly, don't forget to proofread and revise your essays meticulously. A well-polished essay leaves a good impression on the admissions committee and can help elevate your application.

Remember, there's no specific formula or template for successful college essays, as it's largely about telling your unique story and showcasing your personal qualities in a compelling, authentic manner. Good luck with your essays and your application to Caltech!

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California Institute of Technology Essay Guide 2020-2021

In this California Institute of Technology essay guide, we will give tips for applicants to best express themselves in their personal statements as prospective Caltech students. For more guidance on personal essays and the college application process in general,  sign up for a monthly plan to work with an admissions coach 1-on-1. other CollegeAdvisor.com Admissions Experts , register with CollegeAdvisor.com today.

The California Institute of Technology (Caltech) – famous for both its prestige in STEM and its wild pranks – is a private research institution in Pasadena, California, home to the Rose Bowl and a short drive away from Los Angeles. Caltech is one of the smallest schools in its prestige level, with an undergraduate enrollment of only 948 students. The admission rate in the past has hovered around 7%, though the exact number is not published directly by the university.

Life as a Caltech Undergrad

At California Institute of Technology, students are expected to focus their studies on STEM subjects, ranging from biophysics to planetary sciences. Many Caltech students pursue graduate studies in research or work in an industry, such as the nearby center for NASA’s Jet Propulsion Laboratory (JPL). The Core Curriculum at Caltech requires courses in humanities and social sciences, mathematics (including multivariable calculus and linear algebra), and physical education. Students are also expected to take a course in scientific writing, in line with Caltech’s goal of producing top-notch researchers. Caltech students are perhaps most well-known for their pranks, many of which are city-wide, including changing the Hollywood sign or pranking Caltech’s rival school, MIT.

Because of its small community, Caltech houses a tight-knit student population and emphasizes intimacy in its classes. The Caltech student population is organized into a “House System,” modeled after the residential college system of Oxford and Cambridge. At the start of freshman year, students undergo a two-week rotation through the houses to get a feel for each, then rank their preferences. The student will then be aligned with one house for the rest of their undergraduate career. Each house has its own slogan, website, and, some say, personality.

In summary, Caltech offers its students a rigorous and fun education in a tight knit community in Southern California. Admission to Caltech is highly selective and the first step towards an acceptance is making your application stand out. Caltech is looking for intellectually curious and driven students with passionate stories who know how to work hard and play hard. The supplementary essays provide the opportunity to demonstrate that you possess all of these qualities.

Prompt #1: Describe three experiences and/or activities that have helped develop your passion for a possible career in a STEM field. (Your response for each experience/activity should range between 10–120 words.)

The Admissions Office asks this question to learn more about your background in STEM, since Caltech is a technical institute that emphasizes rigor in STEM classes. In your answer, highlight experiences that show you can handle Caltech’s rigor, demonstrate your passion for STEM, and explain major takeaways from each experience that have helped inform your future career.

Carefully consider which extracurriculars you want to include on this list – start by thinking about ones that you can connect to your future career, and what type of research you hope to pursue at California Institute of Technology. Focus on extracurriculars that are a major part of your application, that you’ve dedicated time and/or leadership to, or where you can highlight specific accomplishments . An example could be a STEM competition, a school organization, research, or work position.

Keep in mind – this prompt is only 120 words . That means, you likely won’t be writing narratively (unless you can keep it to 40 words each!) and will have to consider each word and focus of this answer carefully .

In my essay, I focused on the three main STEM activities in my high school career – a school organization, Science Olympiad, which often placed highly in competitions in our state, and of which I was the captain. However, rather than focusing on my position or awards (which were listed in the extracurricular section of my Common App) I focused on my interest, my experience, and specifically what skills I gained, such as sawing or drilling.

I also mentioned the breadth of my events, connecting them to my intended major at California Institute of Technology. My other two activities were both research internships – one in bioengineering, the other in surgical skills. In both, I focused specifically on skills and topics I was exposed to, which I was unable to fit into my original extracurricular description.

Prompt #2: Much like the life of a professional scientist or engineer, the life of a “Techer” relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (Your response should range between 250–400 words.)

In this essay, Caltech is asking about several major themes: collaboration, innovation and goals, and finally, Caltech. In your response, you should demonstrate that you have done your research into Caltech, whether that be projects you would like to join with renowned professors, or ways in which you would contribute to the California Institute of Technology community.

In many ways, this essay is a clever combination of a typical “Why School” prompt and an emphasis on Caltech’s values. In your answer, be specific, whether by mentioning Caltech traditions you would like to be a part of (the Pumpkin Drop? the pranks?), professors you want to work with, or classes you’re excited for. Note: Do not just name drop several professors. When you mention professors, write about their work and research, beyond just their broad field. Why does that research area excite you?

In addition to the typical aspects of a “Why School” answer, you should always consider the specifics of the prompt — collaboration and innovation. Thus, do research into student-led initiatives , such as science for the community, or an independent student project. All is fair game, and don’t be afraid to be imaginative — what projects have you always wanted to work on? At California Institute of Technology, you’ll have the mentors and the resources to accomplish it.

In my year of admissions, this prompt was not given, but a very similar one was. In my essay, I emphasized my intellectual curiosity and described my goals at California Institute of Technology specifically. I focused on specific courses and research projects I wanted to contribute to, specifically in relation to brain sciences and epigenetics. I related my interests to volunteer work I had done in high school and my passion to be a driving force in working towards a solution. My answer also included a specific reference to the small class size at Caltech and included a personal narrative in which I relayed both my passion for biology and my relationship with my biology teacher, communicating my hope for building a one-on-one mentorship relationship with a professor.

Prompt #3: Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (Your response should range between 250–400 words.)

In this essay, the Admissions Office at California Institute of Technology is trying to get to know you better. Caltech’s community is made up of quirky students – your answer to this question should help the admissions officer get to know what makes you, you.

With this essay prompt, consider a unique aspect of yourself – or a unique spin on that aspect! This is not necessarily the essay to drive home again that you are passionate about STEM — unless there’s an unshared, specific, and unique activity you do related to STEM. This is the prompt to show that you are human – not just a student!

One common issue that many students run into is: unique? But I can’t think of anything that I do that’s unique…I know at least X amount of people out there who do X thing! The question is, how does this activity emphasize your personality, passions, or quirks? Does it bring out certain traits that make you unique? Do you engage with this activity in a special way? Your perspective on yourself is key to answering this prompt creatively – it might not be the activity itself that’s special, but your take on it and the way you choose to present your passion to the readers.

In my essay, I focused on an activity I genuinely did for fun – I had no competitions, no awards, no group activity, and honestly, no reason for its inclusion in my application. But I had a story. I chose to write about singing and taking voice lessons. This is not a unique activity, clearly – plenty of students sing, and many are in award-winning choirs and competitions. I wrote about the vocal exercises that students practice – shouting the funkiest words out the window to improve flexibility and vocal strength. I spoke about what it meant for me to learn to sing, how it has impacted who I am, and mentioned specific examples: my early love of musicals and the alto female voices found on Broadway.

Again, my experience is in no way special, as many students might have the very same activity and passion – but it was in the way I expressed that passion, through specific examples and references, that ultimately made my essay an interesting read.

Prompt #4: The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech’s community? (Your response should range between 250–400 words.)

The diversity essay is one that stumps many a student. Maybe you come from a community where mostly everyone acts like you, or thinks like you. That’s a majority of the population! With this question, California Institute of Technology wants to know: what perspective do you bring to the table? How do you add to the community in your own way?

Often times, diversity is directly connected in our minds to culture and race. This is not necessarily true – diversity can be found in a range of perspectives and experiences. Finding a story personal to your own experiences is key to brainstorming for this essay prompt. What events in your life have come together to shape you and who you are today? And the answer can be any number of experiences, as long as you be true to yourself and explain how they have impacted you.

In my response, I actually did write about culture — particularly, how my father’s Brazilian culture and my mother’s Taiwanese culture clashed in my childhood. I drew from each side of my upbringing in order to explain how they’ve contributed to who I am today, what traits make up my being. I referenced not only the culture, but the arguments that have contributed to my values today — as a person and student.

This California Institute of Technology essay guide was written by Katie Chiou, Brown University ‘21. If you want to get help writing your Caltech application essays from Katie or other CollegeAdvisor.com Admissions Experts , register with CollegeAdvisor.com today.

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