Applying to the University of Illinois Urbana-Champaign (UIUC) means answering two to three supplemental essay prompts, each approximately 150 words. The number of prompts depends on whether you’re applying to a specific major or the undeclared program, and whether you’ve selected a second-choice major.
Ranked #9 among the best public schools, UIUC is a highly selective institution, and your essays are one of the best ways to strengthen your application. In this guide, we’ll walk through each prompt and share tips and examples to help you write responses that stand out.
- UIUC Supplemental Essay Prompts
- How to Write the UIUC Specific Major Supplemental Essays
- How to Write the UIUC Undeclared Program Supplemental Essays
- How to Write the UIUC Second-Choice Major Supplemental Essay
- Writing UIUC Supplemental Essays That Work
- Frequently Asked Questions
- Takeaways
UIUC Supplemental Essay Prompts
UIUC requires two to three supplemental essays on top of the Common App personal statement. How many and what specific prompts you need to answer depends on a few matters related to your major.
Below are the prompts if you’re applying to a specific major.
| UIUC Specific Major Supplemental Essay Prompts |
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And if you’re applying to the undeclared program in the division of exploratory studies, here are the prompts:
| UIUC Undeclared Program Supplemental Essay Prompts |
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Finally, if you’ve selected a second-choice major (including undeclared), see the prompt below.
| UIUC Second-Choice Major Supplemental Essay Prompt |
| If you’ve selected a second-choice major (including undeclared): Please explain your interest in your second-choice major or your overall academic or career goals. (max 150 words) |
As you can see, UIUC’s prompts are program-specific, designed to gauge how intentional you are about your chosen academic path. We’ll go through each one individually below, along with tips and examples to help you craft strong responses.
How to Write the UIUC Specific Major Supplemental Essays
| Prompt #1 |
| Explain, in detail, an experience you’ve had in the past 3 to 4 years related to your first-choice major. This can be an experience from an extracurricular activity, in a class you’ve taken, or through something else. (max 150 words) |
This is essentially a “why major” essay. UIUC wants to see your interest in your chosen field backed by concrete experience from the past three to four years, like conducting independent research or leading a robotics team. What did that experience teach you about the field, and how did it lead you to choose your major?
| UIUC Specific Major Supplemental Essay Example |
| At sunset, my group finished measuring a drainage channel behind our school, shoes muddy from the afternoon rain. In physics class, we were investigating why parts of campus flooded after moderate storms. On paper, the flow and slope calculations worked. In practice, water pooled where it should have moved freely.
After re-measuring elevations and observing the site during another rainfall, patterns emerged. Sediment buildup narrowed the channel, and a curb redirected runoff onto the walkway. Using basic hydraulic modeling, I tested how small changes in slope and cross-section affected flow and compared the results with our field observations. The mismatch showed how easily designs drift when exposed to weather and use. That project reshaped how I view civil engineering. Systems must hold up beyond equations—under rain, traffic, and time. At UIUC, I want to design infrastructure that responds to real conditions and serves communities reliably long after construction ends. (150 words) |
Essay analysis and tips
This essay works because it treats the prompt as exactly what it is: a “why major” essay rooted in a specific experience. The writer describes what they did and then shows what the experience revealed about the field. Discovering the gap between theoretical calculations and real-world conditions is what made civil engineering click for them, and that insight is what drives the essay forward.
The closing is also well-executed. Rather than simply stating their interest, the writer articulates a specific vision: designing infrastructure that holds up under real conditions and serves communities over time. That kind of clarity tells UIUC exactly what kind of engineer this applicant wants to become.
For your own response, lead with the experience, then let the reflection do the heavy lifting. What did it teach you that a classroom alone couldn’t?
| Prompt #2 |
| Describe your personal and/or career goals after graduating from Illinois and how your selected first-choice major will help you achieve them. (max 150 words) |
This prompt is pretty straightforward: UIUC wants to know where you’re headed and how your chosen major gets you there. Share your career or personal goals after graduation and connect them directly to your first-choice major. Be specific about what you want to do and why Illinois is the right place to make it happen.
| UIUC Specific Major Supplemental Essay Example |
| When I was fifteen, I began helping a family member manage a new dietary restriction after a medical diagnosis. What started as reading nutrition labels turned into researching nutrient absorption, cultural food practices, and the barriers that make healthy eating inaccessible. I saw how advice that works in theory often fails when it ignores cost, culture, or disability.
That experience shaped my goal to become a registered dietitian focused on community-based nutrition. At UIUC, majoring in Dietetics and Nutrition will give me the scientific foundation in human metabolism and medical nutrition therapy needed to design evidence-based, inclusive interventions. I’m drawn to learning how nutrition intersects with public health and chronic disease prevention. After graduating, I hope to work in community clinics or public health programs that support underserved populations. My goal is to help people build sustainable relationships with food that respect their health needs, identities, and lived realities. (149 words) |
Essay analysis and tips
This essay stands out for how deeply the writer articulates their goals. They zero in on something far more specific than a job title like “nutritionist,” which is helping people build sustainable relationships with food that respect their health needs, identities, and lived realities. That level of detail makes the writer’s ambitions feel fully thought through.
The essay also carries a conversational quality throughout. The author writes naturally, almost as if thinking out loud about how a family experience gradually expanded into a professional calling. That tone keeps the reader engaged and makes the essay feel authentic.
When writing your response, be as specific as possible. Name the population you want to work with, the setting you see yourself in, and the problem you want to address. Those details are what turn a vague career goal into a convincing answer to this prompt.
How to Write the UIUC Undeclared Program Supplemental Essays
| Prompt #1 |
| What are your academic interests? Please include 2-3 majors you’re considering at Illinois and why. (max 150 words) |
Before writing, take some time to browse UIUC’s undeclared programs and its available tracks. Students can apply undeclared within a specific college, like Business Undeclared or Engineering Undeclared, and then choose a major from within that college once enrolled. Knowing which track you’re applying to will help you list two to three majors you’re genuinely drawn to and explain what sparked your interest in each.
| UIUC Undeclared Program Supplemental Essay Example |
| I’m drawn to understanding how natural systems function and how human decisions shape ecosystems, from soil and water quality to biodiversity and climate resilience. I’m considering majors in Natural Resources and Environmental Sciences, Environmental Science, and Crop Sciences because each approaches sustainability from a different but complementary angle.
Natural Resources and Environmental Sciences would ground me in conservation, ecosystem management, and environmental policy. Environmental Science appeals to me for its emphasis on climate systems, data analysis, and human impact. Crop Sciences would let me study sustainable agriculture, soil health, and food systems that balance productivity with environmental stewardship. At UIUC, I’m excited by opportunities to study real landscapes and applied solutions through fieldwork and research. My academic goal is to develop a science-based understanding of how to protect natural resources while meeting human needs, preparing me to contribute to environmental planning, conservation, or sustainability-focused work after graduation. (147 words) |
Essay analysis and tips
The strongest thing about this essay is its coherence. The writer lists three different majors but frames them as three angles on the same core interest: understanding how natural systems work and how human decisions affect them. That throughline makes the response feel intentional and focused, which is exactly what UIUC wants to see from an undeclared applicant.
Each major is also tied to something specific. Natural Resources and Environmental Sciences connects to conservation and environmental policy. Crop Sciences connects to soil health and food systems. That kind of detail signals that the writer has genuinely looked into these programs, and it gives each major a clear reason for being included.
Think about how you can do the same. Whatever majors you list, make sure each one connects back to a specific interest or curiosity that’s uniquely yours.
| Prompt #2 |
| What are your future career or academic goals? You may include courses you took in high school and how these impacted your goals. (150 words) |
This prompt is similar to Prompt #2 for specific major applicants, but tailored for undeclared students. Since you haven’t chosen a major yet, UIUC wants to understand where you’re headed academically or professionally. Share your goals after graduation and, if relevant, mention high school courses that shaped or confirmed those aspirations.
| UIUC Undeclared Program Supplemental Essay Example |
| Only about 5% of the universe is made of ordinary matter, with the rest attributed to dark matter and dark energy. I first learned this in AP Physics, and it reshaped how I thought about scientific knowledge and uncertainty. The idea that most of the universe remains unseen made physics feel expansive and unfinished.
That curiosity led me to the Summer Science Program in Astrophysics, where I analyzed real observational data to identify variable stars using light curves. Interpreting noisy datasets taught me how theoretical models, statistical reasoning, and physical laws intersect in real research. Through physics and calculus coursework, I’ve continued developing these skills by modeling forces, energy, and wave behavior. At UIUC, I plan to explore Physics as a potential major to pursue advanced coursework and research, preparing for a future in scientific research or applied problem-solving that expands our understanding of the universe. (146 words) |
Essay analysis and tips
This essay opens with a striking scientific fact: that only 5% of the universe is made of ordinary matter. That hook immediately signals the kind of thinker this writer is, someone who gets genuinely excited by big, unresolved questions, and it sets the tone for everything that follows.
Take note of how the writer ties coursework directly to curiosity, then do the same with your own experiences. AP Physics sparked a fascination with scientific uncertainty, while the Summer Science Program put that curiosity into practice through data analysis. The prompt gives you the option to mention high school courses, and this writer shows exactly how to use that option well.
If you’re applying undeclared, you don’t need to commit to a specific major, but do signal direction. Rather than declaring it outright, frame it as something you plan to explore, the way this writer does with Physics. It shows admissions that you’re thoughtful and open-minded while still giving them a clear sense of where you’re headed.
How to Write the UIUC Second-Choice Major Supplemental Essay
| Prompt |
| If you’ve selected a second-choice major (including undeclared): Please explain your interest in your second-choice major or your overall academic or career goals. (max 150 words) |
This prompt is simple enough. If you’ve listed a second-choice major, UIUC wants to know why. You can either explain your interest in that specific major or use it as an opportunity to speak more broadly about your academic and career goals. Either way, treat it as a chance to show UIUC that your academic interests run deeper than just one field.
| UIUC Second-Choice Major Supplemental Essay Example |
| I didn’t realize everyday acts of care could be studied until I began volunteering with a community mutual-aid group during the pandemic. What started as delivering groceries and checking in on elderly neighbors became a lesson in how social support shapes people’s lives. Listening to families navigate housing insecurity and mental health challenges showed me how much help depends on systems, not just good intentions.
That experience drew me to Social Work at UIUC. I’m especially interested in courses like SOCW 584: Policy Practice and Policy and SOCW 521: Leadership and Social Change, which explore how policy, ethics, and community practice intersect. I’m also eager to study trauma-informed care and social welfare systems. I hope to engage in field placements that connect classroom learning to real communities. My goal is to become a social worker who strengthens support networks and helps individuals navigate systems with dignity and agency. (148 words) |
Essay analysis and tips
Few applicants can point to a specific moment when a second-choice major started to make sense, but this writer can. Volunteering with a mutual-aid group during the pandemic, they witnessed firsthand how much help depends on systems rather than good intentions alone. That insight is what makes the choice of second-choice major feel convincing and personal.
A compelling moment opens the door, but you still need to back your interest with specifics. Naming UIUC courses like SOCW 584 and SOCW 521 shows that the writer researched the program and can already picture themselves in it. For a second-choice major, that level of investment tells admissions this isn’t just a backup option.
That level of detail also has to fit within the 150-word limit, so keep your essay concise and purposeful throughout. Make every sentence move the response forward, and cut anything that feels padded or out of place.
Writing UIUC Supplemental Essays That Work
Whether you’re writing about a major-defining experience, articulating your career goals, or making the case for a second-choice program, each UIUC prompt is asking the same underlying question: how serious are you about your academic path, and why?
The strongest responses we’ve seen are specific, personal, and anchored in experience. Name the courses, communities, moments that shaped your direction. The more clearly you can connect your past experiences to your future goals, the more convincing your application will be.
These essays can be tricky to navigate on your own, especially with prompts that vary depending on your major and program track. If you need guidance, you can always turn to our Senior Editor College Application Program. We’ve edited and refined 10,000+ essays, and 98% of our students get admitted to their top three choices. If you’re serious about your UIUC application, we’re here to help you make it count.
Frequently Asked Questions
1. Does UIUC require supplemental essays?
Yes, UIUC requires two to three supplemental essays with major-specific prompts, each capped at 150 words.
2. How many supplemental essays does UIUC have?
UIUC has two to three supplemental essays. How many and what prompts you choose from depends on whether you’re applying to a specific major or to the undeclared program, and if you have a second-choice major.
3. What’s the word limit for UIUC supplemental essays?
Each supplemental essay has a maximum of 150 words.
Takeaways
- At UIUC, you’ll need to submit two to three supplemental essays of 150 words each.
- The prompts you answer will depend on whether you’re applying to a specific major, the undeclared program, or have selected a second-choice major.
- UIUC’s supplemental essays are your chance to show how your academic interests and goals make you a strong fit for your chosen program and the campus community.
- Writing major-specific essays can feel nerve-wracking, but an admissions expert can help you tailor your responses to make a strong case for your place at UIUC.
Eric Eng
About the author
Eric Eng, the Founder and CEO of AdmissionSight, graduated with a BA from Princeton University and has one of the highest track records in the industry of placing students into Ivy League schools and top 10 universities. He has been featured on the US News & World Report for his insights on college admissions.
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