California Institute of Technology
California Institute of Technology (Caltech) is a world-renowned private research university in Pasadena, California, famous for its rigorous STEM focus and core curriculum. Caltech manages NASA's Jet Propulsion Laboratory and maintains an exceptionally low student-to-faculty ratio.
Acceptance rate
3.8%
Undergrad enrollment
1,023
Test policy
Test required
Application fee
$85
Application deadlines
| Round | Deadline |
|---|---|
| Restrictive Early ActionRestrictive Early Action application deadline | November 1, 2026 |
| Financial AidREA financial aid priority deadline | November 1, 2026 |
| Regular DecisionRegular Decision application deadline | January 4, 2027 |
| Financial AidRD financial aid priority deadline | January 15, 2027 |
| TransferTransfer application deadline | February 1, 2027 |
Supplemental essay prompts
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 has a rigorous core curriculum and 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? *Note that you are under no obligation to follow this choice if admitted.
Option 1 -- COLLABORATION: STEM as shared learning. 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?
Option 2 -- PROCESS: The thought behind the outcome. 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?
Option 1 -- LEARNING: STEM as a never-ending rabbit hole. 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.
Option 2 -- PURSUING: STEM as sustained intellectual engagement. 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?
Option 3 -- MAKING: STEM as creation. 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 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?