California Institute of Technology: Acceptance Rate and Your Chances
Updated June 2026 · CollegeCalcAI
| Acceptance rate | 3% |
| SAT (75th percentile) | 1580 |
| ACT (75th percentile) | 36 |
| Location | CA |
| School type | Private |
Caltech is a small private research university in Pasadena, California, with an intense focus on science and engineering. It admits only about 3% of applicants, putting it among the most selective schools in the country. Getting in requires not just strong grades and scores, but a genuine, deep passion for technical subjects.
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With a 3% acceptance rate, Caltech turns away the vast majority of applicants, including many with perfect grades and test scores. The sheer selectivity means that being a strong student is the starting point, not the finish line.
At this level of competition, applicants who stand out usually have a track record of doing real technical work, not just acing coursework. Research experience, science competitions, or independent projects can all help show that you think and work like a scientist or engineer.
Test scores that make you competitive
Among admitted students, the 75th percentile SAT score is 1580 and the ACT equivalent is 36. That means a significant share of the class scored at or near the top of both scales. Caltech has moved toward test-optional policies in recent years, so students who choose not to submit scores are still considered, but strong scores can strengthen an otherwise competitive application.
What Caltech looks for
Caltech wants students who are genuinely obsessed with understanding how things work. That means top grades in the hardest math and science classes your school offers, but also evidence that you pursue these interests outside the classroom. Depth matters far more than breadth here. A student who has spent years on one research question or competition is often more compelling than someone with a long list of clubs.
Recommendations from math or science teachers carry particular weight. Your essays should show how you think, not just what you have accomplished.
Estimate your chances at California Institute of Technology
You can get a free, instant estimate of your odds at Caltech by using the CollegeCalcAI calculator at collegecalcai.com. Enter your GPA, test scores, and activities to see where you stand compared to admitted students.
Frequently asked questions
What is Caltech's acceptance rate?
Caltech accepts about 3% of applicants, making it one of the most selective colleges in the United States.
What SAT or ACT score do I need for Caltech?
The 75th percentile SAT score for admitted students is 1580, and the 75th percentile ACT score is 36. Scoring at or near these levels puts you in the competitive range, though Caltech also accepts applications without test scores.
Is Caltech hard to get into?
Yes. A 3% acceptance rate means that even highly qualified students are regularly turned away. Academic strength is necessary but not sufficient on its own.
See your real odds at California Institute of Technology
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Sources: U.S. Department of Education (IPEDS), NCES, and publicly reported Common Data Sets. Acceptance rate and score figures are rounded and reflect recent admissions cycles. How we calculate chances.