Wyoming · Nonprofit
TETON SCIENCE SCHOOLS INC
TETON SCIENCE SCHOOLS INC (Wyoming) receives grants from 71 organizations whose IRS filings report $13,948,410 to it, the largest being TENACRE FOUNDATION ($2,245,393). 44 of them have funded it in more than one year.
- Revenue FY2025
- $20M
- Funders on record
- 71
- Grants received
- $14M
- Net assets
- $46M
What Teton Science Schools Inc does
Mission
Delivering place-based education programming to students of all ages through field education, teacher professional development, visitor engagement, and pre k through 8th grade education. Teton science schools mission is to connect people, place, and nature through education.
As stated on its FY2025 Form 990.
Programs
On its FY2024 return the organization reported a significant change in how it conducts a program.
Closed the high school.
Its own explanation, from Schedule O of that return (Part III, line 3).
Mountain Academy: Mountain Academy is an independent day school with campuses in Jackson, WY, and Teton Valley, ID. The school serves 183 students pre-K through grade 8 with an innovative curriculum that integrates academic excellence, creativity, and critical thinking with outdoor experiences and service learning. Mountain Academy students complete the program prepared for high school and equipped with the skills to engage and participate in their communities and beyond. During the summer months, Mountain Academy served 357 youth in educational summer camp programs.
$7,467,815 spentof which $793,815 as grants$3,664,749 earned by the program53% of program spendingField Education: Last year, 5,222 youth from Wyoming, the Rocky Mountain West, and across the country came to TSS to experience hands-on science and outdoor learning. In these multi-day programs, students explored wildlife ecology, geology, and land stewardship while developing resilience, teamwork, and leadership. These experiences create lasting connections to nature and empower young people to see themselves as capable learners and conservation stewards.
$3,923,390 spentof which $327,953 as grants$3,512,267 earned by the program28% of program spendingWildlife Expeditions: TSSs Wildlife Expeditions is a premier wildlife tour program in Grand Teton and Yellowstone National Parks. These tours, guided by expert naturalists, introduced 5,225 visitors from around the globe to the regions wildlife, landscapes, and conservation stories. Wildlife Expeditions also generates critical earned income that supports TSS programs and helps sustain our nonprofit mission.
$1,822,144 spentof which $55,830 as grants$1,746,077 earned by the program13% of program spendingProfessional Learning: APPROXIMATELY 600 CURRENT STUDENTS, AND ASPIRING EDUCATORS, AS WELL AS 9 SCHOOLS, PARTICIPATED IN PROFESSIONAL LEARNING THROUGH A RANGE OF PROFESSIONAL DEVELOPMENT OPPORTUNITIES COMBINING EDUCATIONAL THEORY, PRACTICAL APPLICATIONS, INNOVATIVE LEADERSHIP STRATEGIES AND MENTORSHIP.TSS advances the practice of place-based education nationwide and internationally by training teachers, school leaders, and community educators. Through workshops, online resources, and long-term partnerships, TSS provided 1,309 educators with the tools to transform their teaching and strengthen community connections. This work scales the TSS mission far beyond our own classrooms, equipping educators across the United States and abroad to engage students through the places they live.
$878,821 spentof which $94,663 as grants$947,737 earned by the program6% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $14,092,170.
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 2021 to 2022, from $55M to $52M (−5%).
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 1% · 2018 2% · 2019 2% · 2022 13% · 2023 10%. Grants only. Government contracts and fees sit inside program revenue.
40% of TETON SCIENCE SCHOOLS INC’s revenue is contributions — more earned-revenue than three-quarters of its peers (87% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 6 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 17 funders to 23 funders, grant income fell $1.4M → $816k.
20 of 71 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 30% 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 TETON SCIENCE SCHOOLS INC’s funders (the co-funder graph). Top 30 of 71 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
TETON SCIENCE SCHOOLS INC has a broad base — no single funder exceeds 16% of grant income, and it takes 5 funders to reach half.
the vertical line marks half of all grant income — 5 funders to its left
61% 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 TETON SCIENCE SCHOOLS INC.
Largest funder’s share by year: 2017 48% · 2018 44% · 2019 37% · 2020 24% · 2021 50% · 2022 33% · 2023 21% — 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
38% of TETON SCIENCE SCHOOLS INC's funders are still giving 3 years after their first grant; 62% 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
TETON SCIENCE SCHOOLS INC draws 81% of its grant income from funders outside Wyoming, across 17 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $4.1M 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.
Against its field
TETON SCIENCE SCHOOLS INC's revenue grew 29% between 2017 and 2025.
this organization peer median middle 50% of peers· 195 environment nonprofits $10M–$100M, FY2025
Government funding TETON SCIENCE SCHOOLS INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $60k on record.
- Department of the Interior$60k
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 TETON SCIENCE SCHOOLS INC
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 Wyoming
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
76% of spending goes to programs.
Governance
Screen this organization
A dated, signed PDF of the compliance screen for TETON SCIENCE SCHOOLS INC: 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 TETON SCIENCE SCHOOLS INC?
- TETON SCIENCE SCHOOLS INC (Wyoming) receives grants from 71 organizations whose IRS filings report $13,948,410 to it, the largest being TENACRE FOUNDATION ($2,245,393). 44 of them have funded it in more than one year.
- How many funders does TETON SCIENCE SCHOOLS INC have?
- IRS filings report 71 organizations giving $13,948,410 in grants to TETON SCIENCE SCHOOLS INC, 44 of which have funded it in more than one year.
- Who is the largest funder of TETON SCIENCE SCHOOLS INC?
- TENACRE FOUNDATION is the largest funder on record, with $2,245,393 in grants. The full list of funders is on this page.
- How can an organization like TETON SCIENCE SCHOOLS INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Wyoming. 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 Teton Science Schools →
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 71 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