St Marks School of Southborough Inc
25 Marlborough Rd PO Box 9105, Southborough, MA · IRS data through FY2025
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2025 | $37,003,497 | $47,831,333 | $196,705,316 |
| FY2024 | $30,626,300 | $44,897,354 | $194,920,777 |
| FY2023 | $40,261,322 | $42,998,204 | $191,103,420 |
| FY2022 | $31,914,051 | $39,899,309 | $185,838,077 |
| FY2021 | $26,796,658 | $38,580,282 | $208,031,157 |
| FY2020 | $38,316,996 | $35,027,521 | $179,661,255 |
| FY2019 | $31,098,569 | $35,514,510 | $177,494,507 |
| FY2018 | $32,801,761 | $34,187,649 | $176,390,133 |
| FY2017 | $24,728,983 | $32,532,449 | $164,845,765 |
| FY2016 | $24,762,630 | $32,616,303 | $159,982,392 |
| FY2015 | $24,667,015 | $31,004,717 | $170,824,816 |
| FY2014 | $23,777,554 | $29,618,801 | $168,609,959 |
| FY2013 | $34,682,966 | $28,153,411 | $156,018,801 |
| FY2012 | $20,854,862 | $26,321,721 | $141,091,919 |
Form 990 filings
The returns filed by St Marks School of Southborough Inc (EIN 04-2103623), including Form 990 PDFs and e-file data by year, are available in ProPublica's Nonprofit Explorer. The figures on this page come from IRS data files built from those returns.
Where the revenue came from
| Source | Amount | % of revenue |
|---|---|---|
| Contributions & grants | $4,784,972 | 13% |
| Program service revenue | $27,190,392 | 73% |
| Other revenue | $5,028,133 | 14% |
Where the money was spent
| Category | Amount | % of expenses |
|---|---|---|
| Program services | $36,216,091 | 76% |
| Management & general | $8,431,068 | 18% |
| Fundraising | $3,184,174 | 7% |
What the numbers show
- Program service revenue made up 73% of total revenue in FY2025.
- Program services accounted for 76% of functional expenses, management & general 18%, and fundraising 7%.
- 76% of functional expenses went to program services in FY2025. That is higher than 19.2% of 182 Education organizations in MA.
- Net assets covered about 49.3 months of expenses at the end of the reporting year. That puts it in the 73rd percentile among 2334 Education organizations in MA.
- Total revenue was higher than 96.6% of 2371 Education organizations in MA.
- Total revenue rose from $20,854,862 in FY2012 to $37,003,497 in FY2025. Revenue increased in 8 and decreased in 5 of 13 year-over-year comparisons.
- Expenses exceeded revenue in 12 of 14 reported years (FY2012, FY2014, FY2015, FY2016, FY2017, FY2018, FY2019, FY2021, FY2022, FY2023, FY2024, FY2025).
- The highest revenue on record here is $40,261,322 in FY2023.
- Net assets grew from $141,091,919 to $196,705,316 between FY2012 and FY2025.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity).
Figures compared against other organizations of the same NTEE program area in the same state. See the methodology page for how these are calculated and the guide to reading nonprofit financials for their limits.
About this organization
REFER TO SCHEDULE OST. MARK'S SCHOOL EDUCATES YOUNG PEOPLE FOR LIVES OF LEADERSHIP AND SERVICE.
IRS status
| Ruling year | 1932 |
| Subsection | 501(c)(3) |
| Classification | Public charity |
| Program area (NTEE) | B250 — Education (in MA) |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity). |
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Source: Internal Revenue Service — Exempt Organizations Business Master File (downloaded November 4, 2026), Statistics of Income extracts, Form 990 e-file data, Publication 78 and the Automatic Revocation list. Figures are as reported by the organization; IRS processing may adjust them. This is not a charity rating and not tax advice. Confirm deductibility in IRS Tax Exempt Organization Search.
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