Photo: Ncoriaty (CC BY-SA 4.0)
School data & stats
Outcomes
Cost
Community
Overview
Caltech is a tiny, intensely technical institute in Pasadena that punches far above its size in research output, most visibly through its management of NASA's Jet Propulsion Laboratory just up the road. It functions almost like a national research lab with an undergraduate college attached: the institute is organized into a handful of divisions — engineering, physics and astronomy, chemistry, biology, and geological and planetary sciences — and every student, regardless of eventual major, works through the same demanding math and physics foundation before specializing. The scale is deliberately small, keeping the community close and research access unusually direct for undergraduates.
Academics
Every student takes the same core sequence in math, physics, and chemistry before branching into engineering, the physical sciences, biology, or geological and planetary sciences — a department where Caltech has a particularly strong reputation, alongside astrophysics through its role co-running the LIGO gravitational-wave observatory. Class sizes are small and problem-set-driven, with close faculty contact and heavy emphasis on collaborative work over competition, formalized by an honor code that allows unsupervised, take-home exams and around-the-clock access to labs and libraries. The Summer Undergraduate Research Fellowship (SURF) program routinely places undergraduates into real faculty research, often starting after freshman year rather than waiting until junior year as at many peer schools.
Campus & student life
The campus is compact and entirely residential, organized around a house system — Blacker, Dabney, Fleming, Lloyd, Page, Ricketts, and Avery among them — that new students choose during a first-week process called Rotation, and which becomes the center of social life, dining, and intramural rivalry for the rest of college. Culture leans nerdy and prank-prone: Ditch Day, when seniors vanish for a day after leaving elaborate locked-door puzzles ("stacks") for underclassmen to solve, is a defining, decades-old tradition. Varsity athletics exist but are not central to identity the way they are at bigger schools. Pasadena itself is a quieter, more residential counterpoint to nearby Los Angeles.
Getting in
Applicants are evaluated heavily on demonstrated aptitude and passion for math and science — rigorous coursework, olympiad or competition results, and evidence of independent technical work or research all carry real weight, often more than at peer schools with broader institutional missions. The applicant pool self-selects strongly toward students who are already doing serious STEM work in high school, so essays and recommendations that show genuine intellectual curiosity and initiative in a technical field matter more than broad extracurricular breadth or leadership titles.
After graduation
Graduates move heavily into STEM graduate programs, research positions, and technology and aerospace employers, with JPL, national labs, and aerospace companies common destinations given the surrounding industry. The alumni network is small but disproportionately influential in scientific and engineering fields — Nobel laureates among the faculty and alumni are not rare — and the institute's research reputation opens doors at top doctoral programs and national labs that a larger, less research-intensive school might not.
Worth knowing
The honor code shapes daily academic life more than at most schools, enabling unsupervised exams and open lab and library access at all hours. Caltech offers very few majors outside STEM, so it suits students certain they want a technical field, not those hoping to keep humanities options wide open. Workload is heavy from the first term onward, and the small undergraduate population means students and faculty across departments tend to know each other directly.
Admissions
Deadlines (2026–27 cycle)
Applying (2026-27 cycle)
Apply through Common App or QuestBridge.
Caltech's early option is a restrictive early action plan: it isn't binding, but it limits applying early to other private colleges at the same time.
Supplemental essays (8)
Area of Interest
If you had to choose an area of interest or two today, what would you choose? Why did you choose your proposed area of interest? If you selected 'other', what topics are you interested in pursuing?
Scholarly Character - Collaboration (choose one of two)
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.
Scholarly Character - Process (choose one of two)
Tell us about a time your approach to a STEM problem, concept, or project mattered as much as the outcome.
Scientific Drive - Learning (choose two of three)
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.
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