Massachusetts · Nonprofit
THE RIVERS SCHOOL CORPORATION
THE RIVERS SCHOOL CORPORATION (Massachusetts) receives grants from 78 organizations whose IRS filings report $23,836,828 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($11,686,400). 50 of them have funded it in more than one year, and 80% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $46M
- Funders on record
- 78
- Grants received
- $24M
- Net assets
- $99M
What The Rivers School Corporation does
Mission
The rivers school is a coed college preparatory day school for grades 6 through 12. Rivers inspires every student to pursue excellence, thrive in a community of connection and belonging, and create their own path to a life of impact and purpose. Core valuesguided by our philosophy of excellence with humanity, we value:integrity - we are committed to aligning our actions with our values in the continuing pursuit of courage, honesty, and truth.perseverance - we embrace challenges and make space for discomfort as we build resilience and support individual and collective growth.empathy - we seek to understand and connect with one another to foster a community of mutual respect and care.curiosity - we prioritize learning that is grounded in our natural sense of wonder and shaped by exploring complex questions in an ongoing process of discovery.joy - we delight in engaging with our work and with each other, celebrating our passions and the fullest expression of ourselves.
As stated on its FY2025 Form 990.
Programs
School program - the instruction of 534 students - grade 6-12. The school year runs from september to june.
$31,761,974 spentof which $7,228,752 as grants$33,796,860 earned by the program87% of program spendingMusic conservatory - offers premier classical and jazz music education and performance programs that develop the highest levels of artistic and technical achievement in student musicians of all ages
$3,164,587 spentof which $229,292 as grants$3,499,615 earned by the program9% of program spendingSummer camp program - the instruction and supervision of campers in arts, crafts, and outdoor activities.
$341,525 spent$607,143 earned by the program1% of program spendingOther school programs - various extra - curricular activities.
$1,139,773 spent$801,437 earned by the program3% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $36,407,859.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2019 to 2020, from $95M to $109M (+14%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2017 → 2023: the base broadened from 19 funders to 34 funders, grant income rose $1.7M → $2.8M.
22 of 78 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 80% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of THE RIVERS SCHOOL CORPORATION’s funders (the co-funder graph). Top 30 of 78 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
THE RIVERS SCHOOL CORPORATION leans on a few funders — its largest provides 49% of grant income and the top three 61%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
81% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund THE RIVERS SCHOOL CORPORATION.
Largest funder’s share by year: 2017 52% · 2018 16% · 2019 66% · 2020 51% · 2021 45% · 2022 46% · 2023 46% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
57% of THE RIVERS SCHOOL CORPORATION's funders are still giving 3 years after their first grant; 64% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
80% of THE RIVERS SCHOOL CORPORATION's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $4.9M that is directly attributable, 54% of it comes from Massachusetts funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $19M arriving through sponsors registered in 15 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like THE RIVERS SCHOOL CORPORATION
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Massachusetts
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
80% of spending goes to programs.
Governance
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for THE RIVERS SCHOOL CORPORATION: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE RIVERS SCHOOL CORPORATION?
- THE RIVERS SCHOOL CORPORATION (Massachusetts) receives grants from 78 organizations whose IRS filings report $23,836,828 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($11,686,400). 50 of them have funded it in more than one year, and 80% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does THE RIVERS SCHOOL CORPORATION have?
- IRS filings report 78 organizations giving $23,836,828 in grants to THE RIVERS SCHOOL CORPORATION, 50 of which have funded it in more than one year.
- Who is the largest funder of THE RIVERS SCHOOL CORPORATION?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $11,686,400 in grants. The full list of funders is on this page.
- How can an organization like THE RIVERS SCHOOL CORPORATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Massachusetts. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Rivers School →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 78 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing