Public Charity

CASTILLEJA SCHOOL FOUNDATION

CASTILLEJA SCHOOL FOUNDATION is a Public Charity headquartered in PALO ALTO, CA. Financial data from the 2025 filing: $55.5M revenue, $37.1M expenses, $317.0M total assets. 133 publicly reported grants to this organization, totaling roughly $41.4M, appear in IRS filings.

EIN: 940373222 PALO ALTO, CA Secondary & High Schools NTEE: B25 Latest filing: 2025
Total Revenue$55.5M
Total Expenses$37.1M
Total Assets$317.0M
Grant Records133
Funding Total$41.4M
Filing Years2021–2025

Mission

CASTILLEJA SCHOOL EDUCATES MOTIVATED YOUNG WOMEN TO BECOME CONFIDENT THINKERS & COMPASSIONATE LEADERS WITH A SENSE OF PURPOSE TO EFFECT CHANGE IN THE WORLD. SEE SCHEDULE O.TO PREPARE OUR STUDENTS FOR THE WIDER WORLD, WE INFUSE OUR CHALLENGING COLLEGE PREPARATORY PROGRAM WITH A GLOBAL CURRICULUM THAT FOSTERS AWARENESS, COMPASSION, AND ENGAGEMENT WITH ISSUES BEYOND CASTILLEJA. OUR COMPREHENSIVE ACADEMIC PROGRAM AND EXTENSIVE CO-CURRICULAROFFERINGS DEVELOP IN EACH STUDENT THE SELF-CONFIDENCE TO REACH HER FULL POTENTIAL. ABOVE ALL, OUR FACULTY AND STAFF DEDICATE THEMSELVES TO EXCELLENCE IN EDUCATING YOUNG WOMEN AND IN CULTIVATING YOUNG LEADERS.

Where $100 goes at Castilleja School Foundation

How Castilleja School Foundation divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.

$81 Programs the work itself
$13 Management running the organization
$6 Fundraising raising the next dollar

Inside the $81 for programs

$81
Castilleja provides college preparatory education for girls from grade 6 through grade 12
All program spending
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Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.

Officers & Directors

TRUSTEE Alison Koo
TRUSTEE Andie Sobrato
TRUSTEE Bob Kocher
TRUSTEE Chi-Hua Chien
DEAN OF FACULTY Christina Gwin
DIR OF ADMISSIONS & TUITION ASSIST Claire Ledwith

Officer compensation and complete director data available with membership.

Top Grant Purposes

General Support
$20,859,932 79 grants
Education
$20,367,652 48 grants
Human & Social Services
$96,500 1 grant
Training & Professional Development
$32,500 3 grants

Financial Trends

Year Revenue Expenses Assets
2025 $55.5M $37.1M $317.0M
2024 $34.5M $38.2M $178.8M
2023 $33.9M $34.0M $172.3M
2022 $34.9M $32.3M $165.8M
2021 $35.9M $29.5M $171.1M

Between 2021 and 2025, reported annual revenue grew from $35.9M to $55.5M (+55%), with total assets most recently reported at $317.0M.

Interactive year-over-year charts and full filing details available with membership.

See the full picture for CASTILLEJA SCHOOL FOUNDATION

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