Marlborough School

Los Angeles · Los Angeles County · Private

Private Los Angeles County ~111 seniors

Data Year

Compare with peers

Most similar nearby schools

New Roads School → Geffen Academy at UCLA → Westridge School for Girls → Windward School → Archer School for Girls → Compare all similar →

Enrollment trend & projection

Total enrollment (9–12)

546 (2020) → 546 (2025)

+0.0%

Grade 12 (graduating class)

86 (2020) → 111 (2025)

+29.1%

If this trend holds (+0.0%/yr, Total enrollment)

At tuition of $ / student:

Horizon	Projected Total enrollment	Change	Tuition impact / yr
1 yr (2026)	~546	+0	$0
3 yr (2028)	~546	+0	$0
5 yr (2030)	~546	+0	$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.

Total revenue

$34.6M

FY2023

Net assets (endowment + property)

$142.4M

+42.9% since FY2011

Tuition revenue (program)

$31.3M

≈ $57404/student avg

Gifts & grants

$3.5M

fundraising

Total revenue by year ($M)

Net assets by year ($M)

Source: IRS Form 990 via ProPublica Nonprofit Explorer (EIN 952816435). View latest 990 PDF → 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.

University of California outcomes · Class of 2025

★ Top 10% UC Reach

UC Reach ⓘ

64%

71 admits / 111 seniors
+14.9 pp above peer median (49.1%) · Ranked #4 of 11 similar schools

5-year trend

2021 · 59.8% 2025 · 64.0%

Where this sits on the California curve

CA median
18.5%

Peer median
49.1%

Top 10%
53.3%

This school
64.0%

0%50%100%

CA median 18.5% Top 10% ≥ 53.3% This school 64.0%

Higher than 94% of California high schools (1105 ranked, ≥50 seniors)

📊 What this number means

Marlborough School's UC Reach of 64.0% clears the statewide top-10% cutoff (53.3%) — meaning roughly 64 top-6 UC admits per 100 seniors, well above what most California schools achieve.

For context, the elite tier (top 1%) clears 102.7% — a gap of 39 pp from where this school sits.

Overall, Marlborough School's UC Reach is higher than 94% of California high schools (1105 ranked).

UC Application Reach ⓘ

255.9%

284 applications

Strong UC pursuit. The typical senior is applying to about 3 top-6 UC campuses — a signal of a college-driven student body.

In context: CA median 78.3% · Top 10% statewide ≥ 245.8% · Los Angeles Co. Top 10% ≥ 252.7% · higher than 91% of CA HS.

UC Admit Rate ⓘ

25.0%

71 / 284 applications

In context: CA median 26.0% · Top 10% statewide ≥ 40.5% · higher than 43% of CA HS.

UC Yield Rate ⓘ

4.2%

3 enrolled of 71 admitted

Yield vs. Enrollment Reach: Yield answers "of UC admits, what % chose UC?" — denominator is just the admits. A small admitted cohort can post a low yield even when the school sends a healthy share of its class to UC.

UC Enrollment Reach ⓘ

2.7%

3 enrollees / 111 seniors

Enrollment Reach vs. Yield: Reach answers "of the whole senior class, what % ended up at UC?" — denominator is everyone. High Yield with low Enrollment Reach is common at elite privates: most admits matriculate, but the school sends most of its class to non-UC selective colleges.

Selective UC Reach (UCSD, UCSB, UCI, UCD) ⓘ

47.7

per 100 seniors · campus-level total

In context: CA median 15.7 · Top 10% statewide ≥ 42.4 · higher than 93% of CA HS.

Elite UC Reach (UCB + UCLA) ⓘ

18.0

per 100 seniors · campus-level total

In context: CA median 3.5 · Top 10% statewide ≥ 11.1 · higher than 98% of CA HS.

Senior Class Size ⓘ

111

Private School Affidavit

Total School Enrollment ⓘ

546

All grades · Private School Affidavit

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.

Marlborough School — Enrollment & Outcomes Snapshot

Private · secular · Los Angeles · vs. 10 most similar nearby schools

▸On UC Reach, Marlborough School sits in the middle of its similar-school group (ranked #4 of 11): 64% vs. a peer median of 49%.
▸Its UC Reach has risen 2 points since 2020.
▸Senior-class enrollment is up 29% (86→111 from 2020 to 2025), outpacing the peer-group median of +14%.

Enrollment projection

546 students (2025)

→

~546 projected (2028)

at +0.0%/yr

Your school vs. its 10 most similar nearby schools

School	Type	Size	UC Reach	Enroll. trend
Marlborough School	Private · secular	546	64.0%	+29%
Peer-group median			49.1%	+14%
New Roads School	Private · secular	545	64.6%	+4%
Geffen Academy at UCLA	Private · secular	589	121.1%	+21%
Westridge School for Girls	Private · secular	550	55.1%	+19%
Windward School	Private · secular	625	77.4%	+8%
Archer School for Girls	Private · secular	484	45.1%	-10%
Cathedral High School	Private · Other religious	583	13.7%	-20%
Wildwood School	Private · secular	726	37.7%	+35%
Sequoyah School	Private · secular	451	47.6%	+0%
Pilgrim School	Private · secular	320	27.8%	+90%
Buckley School	Private · secular	829	50.6%	+30%

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 →

Avg. Applicant GPA · top-6 UCs ⓘ

4.11

Avg. Admitted GPA · top-6 UCs ⓘ

4.26

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	4.13	30.4%	17.4%	+12.9pp	Over
UCLA	4.12	9.4%	9.6%	-0.2pp	On target
UC San Diego	4.13	14.6%	16.3%	-1.7pp	On target
UC Santa Barbara	4.13	35.0%	38.6%	-3.6pp	On target
UC Irvine	4.02	10.3%	24.3%	-13.9pp	Under
UC Davis	4.11	44.7%	33.3%	+11.5pp	Over

"Applicant GPA" is the average GPA of this school's UC applicant pool — not an individual student GPA. "CA peer avg" is the application-weighted statewide admit rate at this school-pool GPA, fit separately per campus. At any given pool GPA, real admit rates span widely (UCSD ranges 8% → 65% across CA schools) because UCs use comprehensive review — context-of-opportunity, geography, demographics, and applicant essays all weigh in beyond GPA. A large negative residual flags this school is admitted at a meaningfully lower rate than other CA schools at the same pool GPA — not that students here were "rejected at expected rate X." "Over" / "Under" use a ±5-point band. Campuses with fewer than 5 applicants are omitted.

Where Marlborough School sits vs. all California schools ⓘ

Overall, this school admits its UC applicants in line with what their GPAs predict (24.1% actual vs. 22.6% expected), based on 2024 data.

UC Outcomes Trend — 2018–2025

UC Admit Rate %

UC Reach % (where available)

UC Admits (count, right axis)

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	67	13	3	19.4%	11.7%	23.1%	4.13	4.25
UCLA → Elite	57	7	—	12.3%	6.3%	—	4.12	4.25
UC San Diego → Selective	49	7	—	14.3%	6.3%	—	4.13	4.25
UC Santa Barbara → Selective	58	18	—	31.0%	16.2%	—	4.13	4.30
UC Irvine → Selective	21	8	—	38.1%	7.2%	—	4.02	—
UC Davis →	32	18	—	56.2%	16.2%	—	4.11	4.24

⚠ Campus-level totals may count one student admitted to multiple UC campuses more than once. Admit Volume metrics are not the same as UC Reach, which requires unique-student counts. See methodology →

What This Means

A large share of the senior class applies to UC, indicating strong college-going culture and UC pipeline development.

A large share of the class applies to UC, so the admit rate runs lower than the application volume alone might suggest — expected when many students apply broadly, including to reach campuses. UC Reach (which credits every admit relative to the class) is the truer read of how the class fares: a strong Reach alongside a moderate admit rate is healthy, not a contradiction.

UC Reach is very strong — more than 64% of seniors are earning UC admission. This places the school among California's highest-performing high schools on this metric.

Strong UC Reach paired with very low yield: this school's students are earning UC admission at high rates and then enrolling elsewhere — almost certainly at the most selective private universities (Ivies, Stanford, MIT, the top liberal-arts colleges) or elite out-of-state flagships. UC is functioning as a credentialing-grade backup rather than a destination.

The school generates broad UC access, but fewer students are reaching the most selective UC campuses (UCLA, Berkeley, UCSD, UCSB, UCI). Targeted academic enrichment and campus-fit advising may help.

Berkeley and UCLA admit volume is strong — a clear high-end signal for this school's academic preparation.

UC Reach has declined meaningfully year-over-year. This should be reviewed in context of applicant volume, GPA trends, course rigor changes, and peer-school performance before drawing conclusions.

Note: admit counts used here are campus-level totals. A student admitted to both UCLA and UCSD is counted twice. When UCOP unique-student data becomes available it will be loaded automatically and the labels will update.

Compare with other schools → See Los Angeles County rankings →