A holistic review with no test score in it. Here is what the committee actually weighs, and the five words it uses to describe what it wants.
In This Guide
Quick Answer for Busy Parents
Castilleja reviews applicants holistically, weighing transcripts, recommendations, questionnaires, a timed writing sample, and an interview. No admissions test is part of it. The committee evaluates candidates against five named values it calls the 5 Cs: conscience, courtesy, character, courage, and charity. Several hundred families apply for roughly 60 sixth-grade seats, and more than one hundred apply for ninth grade.
What Makes Castilleja’s Admissions Process Selective
Castilleja does not publish an acceptance rate, so any figure circulating on an aggregator site should be treated as an estimate. The school does share the numbers that matter more. Its committee reviews several hundred applications for sixth grade and more than one hundred for ninth grade. Sixth grade offers about 60 seats and is the earliest entry point. Grades 7 through 11 open in far smaller numbers, and twelfth grade is not an entry point at all.
Selectivity here is not primarily about volume, though. It is about what the school removed. Castilleja does not consider the ISEE, the SSAT, or STAR testing, and states that results sent anyway will not be added to an applicant’s file. When no score exists, nothing in the application can absorb risk on behalf of the rest. A strong transcript no longer gets propped up by a strong test day, and a quiet interview has nothing to offset it.
That changes what a competitive application looks like. Among a pool where most candidates have excellent grades, the separation happens in the writing, the conversation, and the recommendations.
What Castilleja Looks For: The 5 Cs
Most selective schools describe fit in language vague enough to be unfalsifiable. Castilleja names its criteria outright. The admission office states that it seeks girls who embody and appreciate the school’s core values, and that it wants students who are intellectually curious, actively engaged, and strong members of their current school community.
| Value | What It Points To | Where It Surfaces in the Application |
| Conscience | Acting on a sense of right, not on supervision | Parent questionnaire; counselor recommendation |
| Courtesy | How a student treats people with nothing to offer her | Teacher recommendations; interview conduct |
| Character | Consistency between stated values and actual behavior | Recommendations read against the student’s own essays |
| Courage | Willingness to attempt things she might not be good at yet | Student essays; interview; transcript risk-taking |
| Charity | Sustained contribution rather than logged hours | Activities and Interest form; questionnaires |
There is a wrong way to use this. Coaching a twelve-year-old to say the words is transparent, and admissions officers hear it constantly. The useful version is different: help your daughter recognize where these things already exist in her life, so that when a question opens the door she has something real to walk through. A student who describes a moment that required courage, without ever labeling it courage, has done the thing. A student who announces that she values courage has not.
A Note on Community Engagement
Castilleja does not ask students to count service hours, and that is a deliberate signal. Its local partnerships run through student-led community action programs built around sustained relationships rather than accumulated totals. Applications that present service as a tally read against the grain of what the school says it values.
Character is not a section of the application.
It is what the committee reads between the sections, and it is the slowest thing to develop. That is precisely why we start with families well before the application year rather than during it.
Speak with an Admissions Expert
How the Process Works on Ravenna
Everything runs through Ravenna, the shared platform used by many Bay Area independent schools. Create the account first, because forms, event registration, recommendation requests, and status tracking all live there. Applications open September 1, 2026 and are due January 5, 2027, with decision letters mailed March 11 and results posted to Ravenna on March 12, 2027 at 4:00 p.m.
- Create a Ravenna account and submit an inquiry.
- Register for Discover Castilleja events, including the division preview events.
- Submit the preliminary application, which unlocks interview and parent meetup registration.
- Schedule and attend the campus visit and student interview.
- Complete the timed online writing sample.
- Complete the student questionnaires and essays, plus the Activities and Interest form for High School applicants.
- Complete the parent questionnaire.
- Request recommendation letters from the educators required for your daughter’s division.
- Deliver the signed Transcript Release and Confidentiality Form to her current school.
Two Details Families Routinely Miss
First, recommendation requirements differ by division. High School applicants need a current principal or counselor, a current English teacher, and a current math teacher. Middle School applicants need a principal or counselor, a current homeroom or language arts teacher, and the previous year’s homeroom or language arts teacher. That second, prior-year letter catches families off guard every cycle. Castilleja advises asking around mid-November, once teachers have had a real term with your daughter.
Second, the interview format is not uniform. Middle School applicants talk for roughly 15 minutes in person after their campus visit. High School applicants interview for about 20 minutes on Zoom, with sign-up information emailed after January 5, 2027. Our full guide covers every requirement in detail.
- Submit the preliminary application early in the fall. Interview slots and several events are gated behind it, and they fill.
- Go deep in one or two activities rather than broad across six. The questionnaires reward commitment over inventory.
- Choose recommenders who can give specific examples, not just warm adjectives.
- Practice writing to a thirty-minute limit on a keyboard, working from unfamiliar prompts.
- Write the parent questionnaire yourself, in plain language, including where your daughter still struggles.
- Skip supplemental letters. Castilleja states it neither requires nor encourages them.
- Keep the application internally consistent. Essays, recommendations, and the parent statement should describe a recognizable single person.
A Final Thought
A process with no test score can look like less to prepare for. In practice it asks for something harder: a student who can think clearly on the page, speak honestly in a room, and point to things she has actually done. That work does not compress into an autumn, and it keeps paying off long after decisions post in March.
Get an honest read before the application year begins.
We assess where your daughter genuinely stands against what Castilleja weighs, then build backward from the deadline. Sometimes that conversation ends with us recommending a different year or a different school. We would rather tell you that early.