Mission
Groton School's mission is to inspire lives of character, scholarship, leadership, and service within a diverse, inclusive, and close-knit community.
Public Charity
GROTON SCHOOL
GROTON SCHOOL is a nonprofit organization categorized as Public Charity based in Groton, MA. Its most recent IRS filing (2025) reports revenue of $66.9M, expenses of $58.3M, total assets of $703.5M. Imperigo tracks 128 reported grant relationships connected to this organization totaling approximately $55.2M.
EIN: 042104265
Groton, MA
Secondary & High Schools
NTEE: B25
Latest filing: 2025
Total Revenue$66.9M
Total Expenses$58.3M
Total Assets$703.5M
Grant Records128
Funding Total$55.2M
Filing Years2021–2025
Where $100 goes at Groton School
How Groton School divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.
$69
Programs
the work itself
$27
Management
running the organization
$4
Fundraising
raising the next dollar
Inside the $69 for programs
$69
Education of 381 students in grades eight through twelve in a non-profit, co-educational college preparatory boarding school
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.
Sample Grants Received
$500,565
Education & Youth Development
$10,000
GENERAL SUPPORT
$5,997
For grant recipient's exempt purposes
$3,425,078
EDUCATION
$2,729,957
Showing up to 5 of 128 total records — full history available with membership.
Officers & Directors
Board Member
Adam Monroe Spence
Board Member
Alexander Lowell Thorndike
Board Member
Alfred Winkler
Board Member
Allison Chin Hays
Board Member
Andrew K Ferrer
Board Member
Ann Gildroy Fox
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $66.9M | $58.3M | $703.5M |
| 2024 | $71.6M | $55.3M | $670.3M |
| 2023 | $54.7M | $55.1M | $637.0M |
| 2022 | $61.8M | $54.9M | $623.4M |
| 2021 | $71.0M | $54.9M | $639.9M |
Between 2021 and 2025, reported annual revenue declined from $71.0M to $66.9M (-6%), with total assets most recently reported at $703.5M.
Interactive year-over-year charts and full filing details available with membership.