Overview
Caltech recommendation letter overview
Before requesting a recommendation letter for Caltech, it helps to understand how the school's process actually works. Most applicants will go through the Common Application, Coalition Application, or the university's own application portal, and although specific instructions get updated periodically, the core idea stays the same: reviewers want a candid, evidence-based letter from someone with first-hand knowledge of the applicant, written for high school seniors and transfer applicants.
This university follows the common pattern seen across most Common App and Coalition App schools: a teacher evaluation from a recent core academic course, paired with a counselor letter, forms the baseline expectation. Some applicants are also permitted to add one supplemental letter from a coach, mentor, or employer if it meaningfully adds to the picture.
Because exact letter counts, required forms, and deadlines can be updated by Caltech from year to year, applicants should always confirm the current cycle's instructions on the school's own admissions page or application portal before asking recommenders to submit anything. This page is a planning and drafting resource, not a substitute for the school's official requirements.
Requirements
Caltech requirements at a glance
| Typical letter count | 2 (1 teacher evaluation + 1 counselor recommendation), some allow 1 extra |
|---|---|
| Common submission route | Common App / Coalition App online recommender forms |
| Preferred writers | Core subject teacher (junior/senior year) and school counselor |
| Format | Submitted directly online by the recommender, with optional letter upload |
| Confidentiality | Applicants typically waive their right to view the letter |
Always double-check the current application cycle's exact letter count, forms, and deadlines on Caltech's own admissions page, since schools can update requirements between cycles.
Who should write it
Who should write your Caltech recommendation letter
When deciding who should write a recommendation letter for Caltech, prioritize people who can speak directly to intellectual engagement in the classroom, growth over time, contribution to class discussion. Good options usually include a junior or senior year teacher in a core academic subject (English, math, science, history, or a foreign language), the school counselor, and occasionally a coach, employer, or extracurricular mentor. A detailed letter from someone with regular, recent contact is almost always stronger than a short note from someone with a more senior title but limited firsthand knowledge.
Common mistakes
Common mistakes applicants make
- Requesting letters from two teachers in the same subject instead of showing range across disciplines.
- Picking a recommender based on the grade received rather than the depth of the working relationship.
- Submitting a generic form letter that does not mention any specific assignment, discussion, or project.
- Asking for a letter through a hallway conversation instead of a clear, written, well-timed request.
- Not providing the recommender with a resume, brag sheet, or list of activities and goals.
Template
Free Caltech recommendation letter template
Use this starting structure, then personalize every bracketed field with real names, dates, and specific examples before it is submitted through the Common Application, Coalition Application, or the university's own application portal.
Caltech Recommendation Letter Template
Dear Admissions Committee,
I am pleased to write this letter of recommendation for [Applicant Name], who is applying to Caltech. I have known [Applicant Name] for [Length of Time] in my capacity as [Your Role — e.g., professor, supervisor, advisor], and I am glad to share my perspective on [his/her/their] readiness for this opportunity.
[Applicant Name] has consistently demonstrated intellectual engagement in the classroom, growth over time, contribution to class discussion. One example that stands out is [Specific Example — describe a project, course, clinical experience, or work assignment], where [he/she/they] showed [specific strength] under [specific circumstance].
In comparison to other [students/employees/applicants] I have worked with at a similar stage, I would place [Applicant Name] in the [top X%] based on [specific criteria]. [He/She/They] communicates clearly, takes feedback well, and works effectively with [classmates/colleagues/patients/clients].
I recommend [Applicant Name] for admission to Caltech without reservation. Please feel free to contact me at [Email/Phone] if any additional detail would be useful to the committee.
Sincerely, [Recommender Name] [Title / Position] [Institution or Company] [Contact Information]
Frequently asked questions
How many letters of recommendation does Caltech require?
This university follows the common pattern seen across most Common App and Coalition App schools: a teacher evaluation from a recent core academic course, paired with a counselor letter, forms the baseline expectation. Some applicants are also permitted to add one supplemental letter from a coach, mentor, or employer if it meaningfully adds to the picture. Always verify the exact current-cycle number on Caltech's official admissions page, since requirements can be updated each year.
Where are letters of recommendation submitted for Caltech?
Most applicants submit letters through the Common Application, Coalition Application, or the university's own application portal. The recommender typically receives a direct link or email invitation once the applicant adds them to the application.
Who should write a letter of recommendation for Caltech?
Strong choices include a junior or senior year teacher in a core academic subject (English, math, science, history, or a foreign language), the school counselor, and occasionally a coach, employer, or extracurricular mentor. The best recommender is someone with direct, recent knowledge of the applicant's work, not necessarily the most senior or famous person available.
Can I use a generic recommendation letter template for Caltech?
A template is a useful starting structure, but the final letter should be personalized with specific examples, accurate names and dates, and details that connect directly to Caltech's program and the applicant's goals.