California · Nonprofit
CASTILLERO ATHLETIC BOOSTER CLUB
CASTILLERO ATHLETIC BOOSTER CLUB (California) receives grants from 2 organizations whose IRS filings report $103 to it, the largest being ANALOG DEVICES FOUNDATION ($103). 0 of them have funded it in more than one year.
- Revenue FY2025
- $55k
- Funders on record
- 2
- Grants received
- $103
- Net assets
- $45k
What Castillero Athletic Booster Club does
Mission
To support the students and staff of the castillero athletic department and assist with funding coaches, equipment, uniforms and competitive competition fees.
As stated on its FY2025 Form 990-EZ.
Programs
Provided funding for coaching, officiating, uniforms and other costs related to the athletic department.
Provided funding for competitive and greensport programs
$40,000 spent80% of program spendingProvided funding for equipment related to the athletic programs.
$10,200 spent20% of program spending
The 3 programs described on its FY2024 Form 990-EZ. Program spending in total: $50,200.
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 at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $44k to $59k (+34%).
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.
6% of CASTILLERO ATHLETIC BOOSTER CLUB’s revenue is contributions — more earned-revenue than three-quarters of its peers (65% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 9 reported years ran a deficit.
Who funds it, year by year
Grant support over time, funder by funder — shade shows the grant size each year.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 0% 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 CASTILLERO ATHLETIC BOOSTER CLUB’s funders (the co-funder graph). Top 1 of 2 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.
Where its funders are
CASTILLERO ATHLETIC BOOSTER CLUB draws 100% of its grant income from funders outside California, across 1 state in all.
Funder states come from each funder’s own filing. 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
CASTILLERO ATHLETIC BOOSTER CLUB has grown faster than three-quarters of the 17,277 education nonprofits its size.
this organization peer median middle 50% of peers· 17,277 education nonprofits under $100k, FY2025
Organizations like CASTILLERO ATHLETIC BOOSTER CLUB
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.
Screen this organization
A dated, signed PDF of the compliance screen for CASTILLERO ATHLETIC BOOSTER CLUB: 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 CASTILLERO ATHLETIC BOOSTER CLUB?
- CASTILLERO ATHLETIC BOOSTER CLUB (California) receives grants from 2 organizations whose IRS filings report $103 to it, the largest being ANALOG DEVICES FOUNDATION ($103). 0 of them have funded it in more than one year.
- How many funders does CASTILLERO ATHLETIC BOOSTER CLUB have?
- IRS filings report 2 organizations giving $103 in grants to CASTILLERO ATHLETIC BOOSTER CLUB.
- Who is the largest funder of CASTILLERO ATHLETIC BOOSTER CLUB?
- ANALOG DEVICES FOUNDATION is the largest funder on record, with $103 in grants. The full list of funders is on this page.
- How can an organization like CASTILLERO ATHLETIC BOOSTER CLUB 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 2 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