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Winsor School Inc

EIN 04-2105842 · Boston, MA

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

LegitimacyPassesRegistration and standingFinancial healthGood71 out of 100GovernanceStrong90 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

OUR MISSION: THE WINSOR SCHOOL PREPARES YOUNG WOMEN TO PURSUE THEIR ASPIRATIONS AND CONTRIBUTE TO THE WORLD.

Income
$43.4 million
Spending
$41.9 million
Spent on programs
75%
Reserves
1.1 months of spending
Largest source of income
fees for its services, 70%
Employees
245
Volunteers
100
Highest pay
$746,815, head of school

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

Good: 71 out of 100. Higher than 64% of charities in its peer group (education, $10m to $100m).

  • Reserves

    10 of 35

    Spendable reserves would cover 1.1 months of spending.

  • Debt

    16 of 20

    It owes 20% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 3% of income.

  • Income trend

    15 of 15

    Income rose 5% on the year before.

  • Spending floor

    15 of 15

    75% of spending went to programs and raising each dollar of donations cost 30 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

    25 of 27 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 (2)
  1. $25.7 million spent. THE WINSOR SCHOOL OFFERS A RICH AND CHALLENGING CURRICULUM TO ACADEMICALLY MOTIVATED GIRLS IN GRADES 5-12. WINSOR DEFINES CURRICULUM AS THE TOTAL CLASSROOM LEARNING EXPERIENCE FOR ALL STUDENTS. OUR CURRICULAR PHILOSOPHY IS BASED ON OUR UNDERSTANDINGS ABOUT STUDENT LEARNING, THE PEDAGOGIES WE PRACTICE IN RESPONSE TO THESE UNDERSTANDINGS, THE WAYS WE ASSESS LEARNING, AND THE QUALITIES OF CHARACTER WE ENCOURAGE OUR STUDENTS TO DEVELOP - AS WELL AS THE SKILLS AND CONTENT MORE COMMONLY ASSOCIATED WITH "CURRICULUM." OUR CURRICULUM IS A DESIGNED CONTINUUM OF DEVELOPMENTALLY APPROPRIATE LEARNING EXPERIENCES ACROSS DEPARTMENTS. WINSOR FACULTY KNOWS AND UNDERSTANDS THE CURRICULUM AND TAKES RESPONSIBILITY FOR TEACHING IT.CORE CURRICULUMTHE CORE CURRICULUM CONSISTS OF THE FOLLOWING DEPARTMENTS: MATH, ENGLISH, SCIENCE, HISTORY, WORLD LANGUAGES, PHYSICAL EDUCATION, AND PERFORMING AND VISUAL ARTS. ADDITIONALLY, STUDENTS TAKE COURSES IN STEM, HEALTH AND WELLNESS, AND LIBRARY SKILLS. OUR GRADUATION REQUIREMENTS EXCEED THE STATE REQUIREMENTS, AND PREPARE OUR STUDENTS TO SUCCEED AT THE MOST SELECTIVE COLLEGES NATIONALLY AND WORLDWIDE. STUDENTS TAKE AN AVERAGE OF 5-6 CLASSES PER SEMESTER, MEET REGULARLY WITH AN ACADEMIC ADVISOR, AND ARE SUPPORTED BY A COLLEGE COUNSELING OFFICE THAT HELPS THEM IN THE COLLEGE APPLICATION PROCESS.CO-CURRICULAR ACTIVITIESWE ALSO OFFER A WIDE VARIETY OF CO-CURRICULAR ACTIVITIES FOR BOTH UPPER AND LOWER SCHOOL INCLUDING OVER 50 DIFFERENT CLUBS, MOCK TRIAL, STUDENT GOVERNMENT, DEBATE, MODEL U.N., SCIENCE OLYMPIAD, ROBOTICS, AFTER-SCHOOL THEATRICAL PRODUCTIONS, AFTER SCHOOL MUSIC PERFORMANCE, AND MORE.ATHLETICSWITH 14 DIFFERENT SPORTS SPANNING THREE SEASONS, WINSOR STUDENTS HAVE THE OPPORTUNITY TO LEARN A NEW SPORT AND EVEN COMPETE AT THE VARSITY LEVEL DURING THEIR TIME AT WINSOR. OVER 80% OF OUR STUDENTS COMPETE IN ONE OR MORE SPORTS; FOR MOST, ATHLETICS SERVE AS A COMPLEMENT TO THE ACADEMIC EXPERIENCE, PROMOTING TEAMWORK, OFFERING CHALLENGE, AND CREATING OPPORTUNITIES FOR HEALTHY COMPETITION.
  2. $5.6 million spent. WINSOR BELIEVES IN ENROLLING TALENTED STUDENTS WITH GREAT POTENTIAL REGARDLESS OF THEIR FAMILIES' FINANCIAL CIRCUMSTANCES, AND AWARDS OVER $5.6 MILLION ANNUALLY IN NEED-BASED FINANCIAL AID TO MAKE THE SCHOOL FINANCIALLY ACCESSIBLE TO A RANGE OF FAMILIES. OVER 25% OF OUR STUDENTS RECEIVE NEED-BASED TUITION ASSISTANCE, WITH GRANTS COVERING FROM 5% TO 100% OF OVERALL TUITION.

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 October 13, 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 March 1972.

    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 October 21, 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.