Caltech 2025 Admission Statistics

Admissions Snapshot: Caltech

• Acceptance rate: 3.8% (428 admitted from 11,285 applicants)
• ACT middle 50%: 35–36
• Testing policy for 2026–27 applicants: SAT or ACT required
• Average net price after aid: $16,075

Admissions figures describe the fall 2025 entering class, the most recent year we hold verified figures for, from the school's own Common Data Set in GoodGoblin's database. They match our Caltech admissions page. Testing policy is from the Common App 2026–27 requirements grid; enrollment and cost are from the federal College Scorecard. See how your profile compares with GoodGoblin's college match.

Caltech Admission Guide

Bring insatiable curiosity, a tolerance for failure, and the math to back it up, and Caltech will give you the universe.

Why read this?

You’re a rising senior aiming for Caltech. This digest draws on the Common Data Set (CDS) Caltech published in May 2025. Rather than slog through 100‑plus PDF pages, use this digest: a narrative, data‑rich roadmap (no tables, no fluff) that shows where you stand and exactly how to craft a Caltech‑worthy application.

The Admission Landscape: Numbers in Plain English

• Application volume & admit rate. Caltech admitted 428 of 11,285 first‑year applicants for the fall 2025 entering class, an overall admit rate of 3.8% (Common Data Set, fall 2025).
• Who enrolled? 218 said yes (107 men, 111 women), producing a yield of about 61 %, Caltech posts Ivy‑level commitment once the offer lands.
• Testing is required again. For 2026–27 applicants, Caltech requires the SAT or ACT. The CDS behind this digest records the earlier test‑free policy, so it shows no score bands.
• Retention & graduation. First‑year retention sits at a lofty 97 %; six‑year graduation reaches 94 % for the most recent cohort.

Academic Profile of the 2024‑25 Admitted Class

• Course rigor is king. Every admitted student maxes out AP/IB/dual‑enrollment STEM where offered; the selection rubric ranks curriculum strength “Very Important” while class rank and GPA follow closely.
• GPA context. Just 20 % of enrollees even reported a GPA (Caltech reads transcripts holistically) but virtually all sat in the top decile of their class.
• Research chops. Admitted profiles skew toward published papers, Intel/ISEF medals, or original software/hardware builds. If you’ve shipped something, highlight the impact metrics (citations, GitHub stars, patents).

What Caltech Values (and How to Show It)

Caltech looks for three intertwined traits:

1. Quantitative mastery. Multi‑variable calculus by senior fall is the norm, linear algebra or abstract algebra is a plus.
2. Original inquiry. Admissions favors creator energy: designing a nanosatellite > acing AP Physics C.
3. Collaboration + grit. Essays that own failure (exploding lab glassware, futile code loops) then show learning arcs tick boxes for both character and resilience.

Avoid essays that merely recount competition wins without reflection; readers already see the résumé.

The Money Question

• Sticker price (’25‑26) tops $65,622 tuition plus $3,086 required fees and $20,991 standard food & housing, about $90 K all‑in.
• Need‑blind, need‑met. Caltech is need‑blind for U.S. citizens/permanent residents and meets 100 % of demonstrated need with grants and campus jobs, keeping loans optional.
• Merit aid? None. Every dollar is need‑based.
• Deadlines. Submit the CSS Profile and FAFSA by Caltech’s financial aid deadline to guarantee full consideration; confirm the current date on Caltech’s financial aid site.

Anticipated Timeline

The dates below follow Caltech’s recent cycles; confirm this cycle’s dates on Caltech’s admissions site.

• Summer
  • Finish multivariable calc or equivalent.
  • Draft the “fail → iterate → breakthrough” personal statement.
• Early Fall
• November 1. Restrictive Early Action (REA) deadline.
• Attend Caltech’s virtual open house and ask about research matches; note that Caltech does not consider demonstrated interest in admission (Caltech Common Data Set, fall 2025).
• Winter
• Mid‑December. REA decisions.
• January 3. Regular Decision application, transcripts, and aid forms due.
• January 15. Last date to switch from REA defer to RD update.
• Spring
• March 10‑15. Regular decisions post.
• May 1. Deposit deadline.

Life on the Hill

• 100 % first‑year residency. Every frosh lives in one of eight historic “houses,” forging a community that blends prank culture with problem‑set survival.
• Out‑of‑state draw. Two‑thirds of freshmen hail from outside California; a further slice arrives from 60+ countries.
• Clubs that pop. From the fabled Bad Grammer comedy troupe (intentional spelling) to JPL internships that start sophomore year, extracurriculars skew geeky but vibrant.
• Pasadena‑to‑planet pipeline. Classroom breakthroughs leap to Jet Propulsion Laboratory, Palomar Observatory, and NASA fellowships within walking or shuttle distance.

How to Decide If Caltech Fits

Ask yourself:

• Do I relish problem sets that spill past midnight because the proof finally clicks?
• Am I excited by a 3‑to‑1 student‑fac‑ratio brainstorm rather than a huge lecture hall?
• Can I thrive without letter‑grades inflation and with collaboration as the lifeline?

If you answered “yes” more than once, Caltech is likely your playground.

Quick‑Hit Checklist

• Target academics: Multivariable calculus, calculus‑based physics, and advanced lab work.
• Testing: Plan for it. Caltech requires the SAT or ACT for 2026–27 applicants.
• Depth over breadth: One killer research project beats six club leadership titles.
• Deadlines: REA Nov 1 or RD Jan 3 (confirm this cycle’s dates on Caltech’s site); aid forms mirror the application.
• Financial fit: Need‑blind + meets full need; run the Net Price Calculator before committing REA.

Final Word

Caltech compresses world‑class research, a microscopic student body, and sunny Pasadena into a pressure cooker that forges Nobel laureates. If you’re the type who measures weekends in CPU‑hours and solder fumes, this narrow window is worth every joule of effort.

Want a plan built around your numbers? GoodGoblin ingests your transcript, research résumé, and Caltech’s real admit data, then recommends concrete next steps, whether that’s beefing up lab hours or cutting a redundant essay paragraph. Start a free trial today and move from applicant to admitted with data‑driven confidence.