California · Nonprofit
STONE BRIDGE SCHOOL
STONE BRIDGE SCHOOL (California) receives grants from 4 organizations whose IRS filings report $15,770 to it, the largest being GILES W & ELISE G MEAD FOUNDATION ($10,000). 2 of them have funded it in more than one year.
- Revenue FY2025
- $3.8M
- Funders on record
- 4
- Grants received
- $16k
- Net assets
- $3.1M
What Stone Bridge School does
Mission
The charter school will empower every student to be a lifelong learner with essential skills and knowledge utilizing an educational program inspired by waldorf education methods.
As stated on its FY2025 Form 990.
Program
To provide a rigorous educational program that will emphasize the development of basic skills reading, writing, speaking and computation. Development of problem solving skills and global perspective by utilizing an educational program inspired by waldorf education methods. To meet the needs of each child utilizing a developmental approach with consideration to different learning styles.
$2,438,550 spent$223,588 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $2,438,550.
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. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2022 to 2023, from $2.2M to $3.2M (+41%).
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.
Government-grant reliance: 2017 82% · 2018 81% · 2019 84% · 2020 85% · 2021 94% · 2022 91% · 2023 88% · 2024 90% · 2025 86%. Grants only. Government contracts and fees sit inside program revenue.
92% of STONE BRIDGE SCHOOL’s revenue is contributions — more donation-reliant than the typical peer (48% for the typical peer).
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 held at 1 funder, grant income fell $10k → $384.
1 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 16% 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 STONE BRIDGE SCHOOL’s funders (the co-funder graph). 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
STONE BRIDGE SCHOOL leans on a few funders — its largest provides 63% of grant income and the top three 98%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 100% · 2020 52% · 2021 69% · 2022 100% · 2023 100% — broadly stable.
“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.
Where its funders are
STONE BRIDGE SCHOOL draws 75% of its grant income from funders outside California, across 2 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $3k arriving through sponsors registered in 1 state 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.
Against its field
STONE BRIDGE SCHOOL holds deeper cash reserves than three-quarters of the 9,398 education nonprofits its size.
this organization peer median middle 50% of peers· 9,398 education nonprofits $1M–$10M, FY2025
Government funding STONE BRIDGE SCHOOL receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $279k on record.
- Department of Education$279k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like STONE BRIDGE SCHOOL
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 California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
76% 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 STONE BRIDGE SCHOOL: 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 STONE BRIDGE SCHOOL?
- STONE BRIDGE SCHOOL (California) receives grants from 4 organizations whose IRS filings report $15,770 to it, the largest being GILES W & ELISE G MEAD FOUNDATION ($10,000). 2 of them have funded it in more than one year.
- How many funders does STONE BRIDGE SCHOOL have?
- IRS filings report 4 organizations giving $15,770 in grants to STONE BRIDGE SCHOOL, 2 of which have funded it in more than one year.
- Who is the largest funder of STONE BRIDGE SCHOOL?
- GILES W & ELISE G MEAD FOUNDATION is the largest funder on record, with $10,000 in grants. The full list of funders is on this page.
- How can an organization like STONE BRIDGE SCHOOL find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Stone Bridge 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 4 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 14, 2026. What this page cannot tell you · view filing