Caltech Essay Prompt 4 (2026-2027)
California Institute of Technology's supplemental essay 4 of 8 for the 2026-2027 application: the prompt, the limit, when it is due, and how to answer it. Verified on August 7, 2026.
“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?”
Limit: 200 words. Deadlines: Restrictive Early Action: November 1, 2026. Regular Decision: January 4, 2027.
What Caltech is really asking
Can you learn with other people, in both directions?
The mistake most applicants make
Describing a time you were the tutor and saving face.
Do this instead
One moment: needing help, giving it, or changing your mind because of someone. Show what happened in the exchange and what you do differently now.
How to spend 200 words
200 words is two or three short paragraphs: the specific moment, what it revealed or changed, and why it points to this school. Cut any sentence that could appear in another applicant's essay.
How to start
Jim starts by asking you: “When did someone else change how you understood a STEM idea?” Answer it with Jim, free →
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What is the Caltech essay 4 prompt for 2026-2027?
"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?" The limit is 200 words.
How long should the Caltech essay 4 be?
200 words. 200 words is two or three short paragraphs: the specific moment, what it revealed or changed, and why it points to this school. Cut any sentence that could appear in another applicant's essay.
When is the Caltech essay due?
With the application: Restrictive Early Action: November 1, 2026. Regular Decision: January 4, 2027.
Can Jim help me write the Caltech essay?
Yes. Jim, the AlphaApply.ai counselor, has every Caltech prompt and deadline loaded. He asks the questions that surface your story and gives feedback on each draft. He never writes it for you. Free to start.
The other Caltech prompts
Prompt and limit for 2026-2027, verified on August 7, 2026. Always confirm on California Institute of Technology's official admissions site before submitting.