Admitted Student Profile
📌 Caltech is test-required and one of the most selective STEM institutions in the world. Virtually all admitted students score 800 on SAT Math or 36 on ACT Math. Research experience is highly valued.
Application Deadlines
Essay Overview
Caltech rebuilt its supplement for 2026-27. You now write five short responses: one required STEM academic-interest answer (150–200 words), one "Scholarly Character" essay chosen from two options (200 words), two "Scientific Drive" essays chosen from three options (200 words each), and one non-academic "Fun Question" about what you'd contribute to the community (100–150 words) — plus an optional academic-context short answer. The school is testing whether you are truly consumed by STEM, how you learn and collaborate through difficulty, and how you'll add to its intensely collaborative, Honor Code–centered community of ~1,000 undergraduates. Faculty read these, so technical depth is rewarded.
What They're Really Looking For
The Official Prompts — 2026-27
You first choose an area of interest or two (or "other"); students don't declare a major until the end of first year, and you're under no obligation to follow the choice if admitted. "Why did you choose your proposed area of interest? If you selected ‘other’, what topics are you interested in pursuing?"
How do you learn when there is no easy answer? Choose one:
- Collaboration: "Tell us about a time your learning in STEM was shaped by another person or group — either because you needed help, offered help, changed your thinking through collaboration, or contributed to someone else's understanding. What did that experience teach you about learning and working with others?"
- Process: "Tell us about a time your approach to a STEM problem, concept, or project mattered as much as the outcome. How did you work through uncertainty or persist creatively in tackling the problem? What would you still defend about your process, regardless of the outcome?"
How does STEM come alive in your life through learning, pursuing, or making? Faculty read these, so get technical. Choose two:
- Learning: "Regardless of your STEM interest listed above, take this opportunity to nerd out and talk to us about whatever STEM rabbit hole you have found yourself falling into. Be as specific or broad as you would like."
- Pursuing: "Tell us about a STEM question, problem, idea, or project that has held your attention over time. What drew you to it, how have you pursued it, and what do you still want to understand?"
- Making: "Tell us about something you created, tested, repaired, modeled, coded, built, or redesigned. What problem were you trying to solve and what did the process reveal to you?"
"Caltech students bring more than academic ability to the communities they join. What is something you would be excited to do, share, teach, make, start, or contribute as part of the Caltech community?"
"Caltech cares about context. Is there anything about your academic preparation, coursework, school context, or learning experiences that would help us better understand your readiness for Caltech?"
The #1 Failure Mode
Describing how much you love science or engineering in general. Caltech receives applications almost exclusively from students who love STEM. The essay must differentiate by naming the specific, narrow question you are pursuing — the more specific the better.