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Castilleja School Foundation

EIN 94-0373222 · Palo Alto, CA

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthStrong90 out of 100GovernanceStrong90 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

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.

Income
$55.5 million
Spending
$37.1 million
Spent on programs
82%
Reserves
20.8 months of spending
Largest source of income
fees for its services, 49%
Employees
299
Volunteers
215
Highest pay
$1.8 million, former hos

Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Strong: 90 out of 100. Higher than 86% of charities in its peer group (education, $10m to $100m).

  • Reserves

    35 of 35

    Spendable reserves would cover 20.8 months of spending.

  • Debt

    10 of 20

    It owes 44% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 33% of income.

  • Income trend

    15 of 15

    Income rose 61% on the year before.

  • Spending floor

    15 of 15

    82% of spending went to programs and raising each dollar of donations cost 8 cents.

Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 90 out of 100. Higher than 25% of charities in its peer group (education, $10m to $100m).

  • Independent board

    25 of 25

    24 of 25 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    0 of 10

    Did not give the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    15 of 15

    Its accounts were audited by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (1)
  1. $30.5 million spent. CASTILLEJA PROVIDES COLLEGE PREPARATORY EDUCATION FOR GIRLS FROM GRADE 6 THROUGH GRADE 12.

Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated November 6, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending June 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since August 1943.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated November 4, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.