Compare with peers
Most similar nearby schools
Pinewood School → Eastside College Prep School → Crystal Springs Uplands Sch → Basis Independent Fremont Upper Sch → Woodside Priory School → Compare all similar →Enrollment trend & projection
If this trend holds (-0.7%/yr, Total enrollment)
At tuition of $ / student:
| Horizon | Projected Total enrollment | Change | Tuition impact / yr |
|---|---|---|---|
| 1 yr (2026) | ~413 | -3 | $0 |
| 3 yr (2028) | ~408 | -8 | $0 |
| 5 yr (2030) | ~402 | -14 | $0 |
Straight-line extrapolation of the recent annual rate — a what-if, not a forecast of intent. Edit the figure to match your school.
Financial profile — IRS Form 990, FY2023
From 13 years of Form 990 filings via ProPublica Nonprofit Explorer (free public IRS data). The school's tax filings show financial scale, fundraising health, and endowment trajectory — signals that drive board-level conversations about tuition pricing, financial-aid capacity, and capital projects.
Source: IRS Form 990 via ProPublica Nonprofit Explorer (EIN 940373222). Tuition-per-student is total program-service revenue divided by latest enrollment — a rough average that includes auxiliary revenue (athletics, food service, etc.); the actual published tuition can differ. Form 990 is filed annually under penalty of perjury, so the financial scale figures are authoritative.
+53.3 pp above peer median (60.4%) · Ranked #2 of 10 similar schools
18.5%
60.4%
53.3%
113.7%
Higher than 99% of California high schools (1105 ranked, ≥50 seniors)
113.7% is exceptional and very rare. For every 100 seniors at Castilleja School, the school is generating roughly 114 admissions to California's six most selective UCs (UCB, UCLA, UCSD, UCSB, UCI, UCD). The typical strong senior here is winning admission at multiple top campuses — a result fewer than 1% of California high schools achieve.
In Santa Clara County — a competitive market where the median is already 33.1% — this still clears the county top-10% bar (79.3%).
Against similar schools, Castilleja School stands out clearly — the peer-group median is 60.4%.
This places Castilleja School in the elite tier statewide — the top-1% threshold is 102.7%.
Overall, Castilleja School's UC Reach is higher than 99% of California high schools (1105 ranked).
Private-school figures come from the California Private School Affidavit. Per CDE, inclusion in private-school data is not an evaluation, approval, or endorsement of a school.
Castilleja School — Enrollment & Outcomes Snapshot
Private · secular · Palo Alto · vs. 10 most similar nearby schools
- ▸On UC Reach, Castilleja School sits near the top of its similar-school group (ranked #2 of 10): 114% vs. a peer median of 60%.
- ▸Its UC Reach has risen 27 points since 2020.
- ▸Across the top-6 UC campuses, Castilleja School is admitting at roughly -6 percentage points below what its average applicant GPA (4.213) alone would predict (18% actual vs. 24% expected). That's worth understanding — it can reflect grade inflation that UC sees through, weaker holistic-review materials at the margin, or applicants concentrating at more selective campuses than typical. Not a verdict; a signal.
- ▸Senior-class enrollment is down 15% (60→51 from 2020 to 2025), trailing the peer-group median of +8%.
- ▸At its recent rate (-0.7%/yr), enrollment projects to ~408 by 2028 — about 8 fewer students than today.
Enrollment projection
That's about 8 fewer students. At a tuition of $ per student, that's roughly $0 in annual tuition revenue at risk.
Default derived from this school's own IRS Form 990 (FY2023): program-service revenue ÷ enrollment, rounded to the nearest $1k — an authoritative average that includes auxiliary revenue (athletics, food service). Your published tuition may differ; adjust if needed. Projection extrapolates the recent annual rate — not a forecast of intent.
Your school vs. its 10 most similar nearby schools
| School | Type | Size | UC Reach | Enroll. trend |
|---|---|---|---|---|
| Castilleja School | Private · secular | 416 | 113.7% | -15% |
| Peer-group median | 60.4% | +8% | ||
| Pinewood School | Private · secular | 612 | 60.4% | +0% |
| Eastside College Prep School | Private · secular | 251 | 26.3% | -5% |
| Crystal Springs Uplands Sch | Private · secular | 347 | 49.5% | +11% |
| Basis Independent Fremont Upper Sch | Private · secular | 350 | 212.5% | +23% |
| Woodside Priory School | Private · Other religious | 436 | 70.3% | +14% |
| Menlo School | Private · secular | 805 | 62.4% | +6% |
| Fremont Christian High School | Private · Other religious | 406 | 34.5% | -42% |
| Notre Dame High School | Private · Catholic | 356 | 69.0% | -34% |
| Granada Islamic School | Private · Other religious | 456 | — | +450% |
| Bridges Academy | Private · secular | 310 | 13.0% | +12% |
UC Reach = top-6 UC admits ÷ senior class (can exceed 100% when students are admitted to multiple campuses). Enrollment trend = first-to-latest grade-12 change on file. Similar schools matched on proximity, size, type, and religious orientation. Methodology →
GPA figures reflect 2024 — UC has not yet released applicant/admit GPA for 2025.
Admit rate vs. CA peer average, by campus ⓘ
How does this school's admit rate at each UC compare to other CA schools whose applicant pool averages the same GPA? Based on 2024 (latest GPA available).
| Campus | Applicant GPA (avg) | Actual admit rate | CA peer avg | Δ | Verdict |
|---|---|---|---|---|---|
| UC Berkeley | 4.25 | 18.9% | 20.9% | -1.9pp | On target |
| UCLA | 4.22 | 11.9% | 10.1% | +1.8pp | On target |
| UC San Diego | 4.23 | 10.8% | 13.3% | -2.5pp | On target |
| UC Santa Barbara | 4.22 | 20.6% | 45.2% | -24.6pp | Under |
| UC Irvine | 4.18 | 23.1% | 26.6% | -3.5pp | On target |
| UC Davis | 4.16 | 24.1% | 34.4% | -10.3pp | Under |
Where Castilleja School sits vs. all California schools ⓘ
Overall, this school admits its UC applicants 6.4 points below what their GPAs predict (17.6% actual vs. 24.0% expected), based on 2024 data.
UC Outcomes Trend — 2018–2025
Class size from CDE grade 12 enrollment. Campus-level data — applicant/admit totals may count a student at multiple campuses more than once.
Campus Breakdown — 2025
| Campus | Applicants | Admits | Enrollees | Admit Rate | UC Reach | Yield | Avg GPA (App) '24 | Avg GPA (Adm) '24 |
|---|---|---|---|---|---|---|---|---|
| UC Berkeley → Elite | 39 | 9 | — | 23.1% | 17.6% | — | 4.25 | 4.28 |
| UCLA → Elite | 41 | 5 | — | 12.2% | 9.8% | — | 4.22 | 4.29 |
| UC San Diego → Selective | 38 | 7 | — | 18.4% | 13.7% | — | 4.23 | — |
| UC Santa Barbara → Selective | 36 | 14 | — | 38.9% | 27.5% | — | 4.22 | 4.31 |
| UC Irvine → Selective | 28 | 11 | — | 39.3% | 21.6% | — | 4.18 | 4.23 |
| UC Davis → | 33 | 12 | — | 36.4% | 23.5% | — | 4.16 | 4.23 |