Illinois · Nonprofit
Crystal Lake South High School Booster Club
Crystal Lake South High School Booster Club (Illinois) receives grants from 3 organizations whose IRS filings report $2,744 to it, the largest being ROCHELL FOUNDATION ($2,500). 1 of them have funded it in more than one year.
- Revenue FY2025
- $76k
- Funders on record
- 3
- Grants received
- $3k
- Net assets
- $118k
What Crystal Lake South High School Booster Club does
Mission
To support Crystal Lake South High School
As stated on its FY2025 Form 990-EZ.
Programs
To support and enhance academic, athletic, music, drama, activities, clubs and programs for the students of Crystal Lake South High School. The Club is honored to provide direct support to school programs.
$63,423 spentof which $62,150 as grants67% of program spendingTo support and boost the attendence and participation in school activities, the Club operates a concessions stand to provide refreshments for the convenience of participants and spectators.
$11,968 spent13% of program spendingTo promote and encourage good character and sportsmanship on the part of the participants and spectators of all activities at CLS High. The Organization provides opportunity for the purchase of school spirit wear.
$16,889 spent18% of program spendingTo support academic acheivement, the Club provides an annual college scholarship for students of Crystal Lake South High School. Scholarships were awarded to three students during the year ended June 30, 2025.
$3,000 spentof which $3,000 as grants3% of program spending
The 4 programs described on its FY2024 Form 990-EZ. Program spending in total: $95,280.
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.
Balance sheet
Total assets at each year end, in dollars. The largest one-year move in total assets was 2017 to 2018, from $73k to $92k (+25%).
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.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 reported years ran a deficit.
Who funds it, year by year
2018 → 2021: the base held at 1 funder, grant income fell $3k → $99.
1 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% 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 Crystal Lake South High School Booster Club’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
Crystal Lake South High School Booster Club leans on a few funders — its largest provides 91% of grant income and the top three 100%; 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: 2018 100% · 2020 100% · 2021 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
100% of Crystal Lake South High School Booster Club's grant income comes from Illinois funders.
Funder states come from each funder’s own filing. $144 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.
Organizations like Crystal Lake South High School 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 Illinois
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
100%
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 Crystal Lake South High School 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 Crystal Lake South High School Booster Club?
- Crystal Lake South High School Booster Club (Illinois) receives grants from 3 organizations whose IRS filings report $2,744 to it, the largest being ROCHELL FOUNDATION ($2,500). 1 of them have funded it in more than one year.
- How many funders does Crystal Lake South High School Booster Club have?
- IRS filings report 3 organizations giving $2,744 in grants to Crystal Lake South High School Booster Club, 1 of which have funded it in more than one year.
- Who is the largest funder of Crystal Lake South High School Booster Club?
- ROCHELL FOUNDATION is the largest funder on record, with $2,500 in grants. The full list of funders is on this page.
- How can an organization like Crystal Lake South High School Booster Club find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Illinois. 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 Crystal Lake South High School Booster Club →
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 3 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