California · Nonprofit
TAM HIGH FOUNDATION
TAM HIGH FOUNDATION (California) receives grants from 34 organizations whose IRS filings report $1,677,637 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($368,042). 22 of them have funded it in more than one year, and 83% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $1.0M
- Funders on record
- 34
- Grants received
- $1.7M
- Net assets
- $1.9M
What Tam High Foundation does
Mission
The Tam High Foundation is a fundraising organization that fosters the academic excellence and emotional and physical well-being of ALL Tam students.In partnership with Tam High faculty and staff, the Foundation funds grants which support innovative programs, state-of-the-art tools and equitable educational opportunities in order to provide every student with a pathway to success.With community support, our efforts make Tam High both a top academic high school and an extraordinary experience.
As stated on its FY2025 Form 990.
Programs
For the support of educational programs and services for approximately 1,600 tamalpais high school students, teachers, and administrators. Examples of items funded with monies granted by the Tam High Foundation are: technology, including chrome books, laptops and carts for student use in classrooms and library. Scientific calculators for math and equipment for science, photography & auto shop. Guest artists for theater, studio art, music & english. Training and programs for wellness, leadership, peer resources, mindfulness, peer mentoring, transition to tam & workplace learning. Field trips for experiential learning & tutoring programs for students needing academic support.
$683,489 spentof which $632,889 as grants89% of program spendingPatrons of the Arts (PATH) supports approximately 600 students participating in the Tam High Visual Arts program. PATH helps fund field trips and student art exhibitions, and provides supplies, workbooks, and professional development for art teachers.
$29,400 spent4% of program spendingTam High United Music Boosters (THUMB) supports 150 students participating in Tam High Music classes. The majority of the fund-raised dollars pay for instrument repairs and replacements, sheet music, field trips and music festivals, workshops with professional musicians, and scholarships to students for private instruction.
$29,033 spent4% of program spendingConservatory Theatre Ensemble (CTE) supports 300 students participating in Tam High Drama classes. The majority of funds are used for guest artist workshops, where professional theatre artists lead workshops in specialized theatre skills. Workshops include design, directing, dance, playwriting, acting, and voice. Fund-raised dollars also cover expenses for sets, costumes, props, scripts, royalties from publishers, field trips, and lighting expenses.
$23,295 spent3% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $765,217.
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 2020 to 2021, from $1.8M to $2.3M (+26%).
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.
90% of TAM HIGH FOUNDATION’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. 2 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 10 funders to 13 funders, grant income rose $95k → $233k.
8 of 34 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 83% 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 TAM HIGH FOUNDATION’s funders (the co-funder graph). Top 30 of 34 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
TAM HIGH FOUNDATION has a broad base — no single funder exceeds 22% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 funders to its left
84% 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 TAM HIGH FOUNDATION.
Largest funder’s share by year: 2017 38% · 2018 32% · 2019 22% · 2020 33% · 2021 51% · 2022 25% · 2023 34% — 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
42% of TAM HIGH FOUNDATION's funders are still giving 3 years after their first grant; 65% 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
83% of TAM HIGH FOUNDATION'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 $282k that is directly attributable, 78% of it comes from funders outside California, across 13 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.4M arriving through sponsors registered in 7 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
TAM HIGH FOUNDATION holds deeper cash reserves than three-quarters of the 9,615 education nonprofits its size.
this organization peer median middle 50% of peers· 9,615 education nonprofits $1M–$10M, FY2025
Organizations like TAM HIGH FOUNDATION
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
86% of spending goes to programs.
Governance
Public support
95%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for TAM HIGH FOUNDATION: 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 TAM HIGH FOUNDATION?
- TAM HIGH FOUNDATION (California) receives grants from 34 organizations whose IRS filings report $1,677,637 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($368,042). 22 of them have funded it in more than one year, and 83% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does TAM HIGH FOUNDATION have?
- IRS filings report 34 organizations giving $1,677,637 in grants to TAM HIGH FOUNDATION, 22 of which have funded it in more than one year.
- Who is the largest funder of TAM HIGH FOUNDATION?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $368,042 in grants. The full list of funders is on this page.
- How can an organization like TAM HIGH FOUNDATION 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.
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 34 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