Washington · Nonprofit
EASTSIDE PREPARATORY SCHOOL
EASTSIDE PREPARATORY SCHOOL (Washington) receives grants from 28 organizations whose IRS filings report $46,932,890 to it, the largest being GATES FOUNDATION ($26,506,751). 21 of them have funded it in more than one year.
- Revenue FY2025
- $35M
- Funders on record
- 28
- Grants received
- $47M
- Net assets
- $80M
What Eastside Preparatory School does
Mission
We inspire students to create a better world through critical thinking, responsible action, compassionate leadership, and wise innovation.
As stated on its FY2025 Form 990.
Program
Eastside Preparatory School provides instruction for students in grades 5 through 12. During the 2024-2025 academic year, 538 students were enrolled. Our thinking curriculum is the hallmark of our program, which focuses on teaching students to think like the writers, scientists, historians, artists and mathematicians whose work they study. At eastside prep, our commitment is to enable our students to think for themselves - and for the good of the planet. Additionally, Eastside Preparatory School has provided $2,428,846 in scholarships to aid in tuition and other school related costs in 2024-2025.
$23,105,447 spentof which $2,428,846 as grants$26,623,889 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $23,105,447.
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 2023 to 2024, from $101M to $113M (+12%).
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.
19% of EASTSIDE PREPARATORY SCHOOL’s revenue is contributions — about as donation-reliant as the typical peer (23% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 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 9 funders to 17 funders, grant income fell $10M → $8.2M.
15 of 28 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 38% 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 EASTSIDE PREPARATORY 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
EASTSIDE PREPARATORY SCHOOL leans on a few funders — its largest provides 56% of grant income and the top three 87%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
38% 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 EASTSIDE PREPARATORY SCHOOL.
Largest funder’s share by year: 2017 98% · 2018 98% · 2019 37% · 2020 58% · 2021 61% · 2022 47% · 2023 61% — 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
58% of EASTSIDE PREPARATORY SCHOOL's funders are still giving 3 years after their first grant; 75% 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
92% of EASTSIDE PREPARATORY SCHOOL's grant income comes from Washington funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $18M arriving through sponsors registered in 10 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.
Against its field
EASTSIDE PREPARATORY SCHOOL runs a healthier operating margin than three-quarters of the 3,794 education nonprofits its size.
this organization peer median middle 50% of peers· 3,794 education nonprofits $10M–$100M, FY2025
Organizations like EASTSIDE PREPARATORY 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 Washington
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
85% of spending goes to programs.
Governance
Public support
70%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for EASTSIDE PREPARATORY 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 EASTSIDE PREPARATORY SCHOOL?
- EASTSIDE PREPARATORY SCHOOL (Washington) receives grants from 28 organizations whose IRS filings report $46,932,890 to it, the largest being GATES FOUNDATION ($26,506,751). 21 of them have funded it in more than one year.
- How many funders does EASTSIDE PREPARATORY SCHOOL have?
- IRS filings report 28 organizations giving $46,932,890 in grants to EASTSIDE PREPARATORY SCHOOL, 21 of which have funded it in more than one year.
- Who is the largest funder of EASTSIDE PREPARATORY SCHOOL?
- GATES FOUNDATION is the largest funder on record, with $26,506,751 in grants. The full list of funders is on this page.
- How can an organization like EASTSIDE PREPARATORY SCHOOL find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Washington. 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 Eastside Preparatory 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 28 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