California · Nonprofit
CORE CHARTER SCHOOLS
CORE CHARTER SCHOOLS (California) receives grants from 1 organization whose IRS filings report $208 to it, the largest being AMAZONSMILE FOUNDATION ($208). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $9.5M
- Funders on record
- 1
- Grants received
- $208
- Net assets
- $6.1M
What Core Charter Schools does
Mission
To provide unique educational opportunities nurturing far-reaching success for students.
As stated on its FY2025 Form 990.
Program
Core charter school is a public, personalized learning charter school, supporting families who home-school their children. Core charter school, in order to foster the educational pursuits of our k-12 students in rural northern california, utilizes the independent study/personalized learning approach: supporting development through choice of curriculum aligned with state standards, engaging parents along with students in learning, and offering classes at our centers and within the community, with the goal that students will demonstrate measurable academic growth in addition to the social skills necessary for their future success. During 2023-24, core charter received certain state program funding that was passed-through to aerostem academy for the career technical incentive grant.
$6,454,615 spentof which $136,456 as grants100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $6,454,615.
The organization over time
Each line starts at 100 in 2018, so what you read is the shape rather than the size: 150 means half as much again as 2018, 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 2024 to 2025, from $8.5M to $9.7M (+14%).
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: 2018 99% · 2019 97% · 2020 98% · 2021 99% · 2022 98% · 2023 98% · 2024 97% · 2025 98%. Grants only. Government contracts and fees sit inside program revenue.
98% of CORE CHARTER SCHOOLS’s revenue is contributions — more reliant on donations than three-quarters of its peers (48% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 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.
Chief executive
Chris Mahurin
Executive director
As listed on its FY2025 Form 990.
Who funds it, year by year
2020 → 2021: the base held at 1 funder, grant income fell $140 → $68.
1 of 1 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% 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 CORE CHARTER SCHOOLS’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.
Where its funders are
100% of CORE CHARTER SCHOOLS'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. Too little is directly attributable to place on a map.
Funder states come from each funder’s own filing. $208 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.
Against its field
CORE CHARTER SCHOOLS runs a healthier operating margin than half of the 9,398 education nonprofits its size.
this organization peer median middle 50% of peers· 9,398 education nonprofits $1M–$10M, FY2025
Organizations like CORE CHARTER SCHOOLS
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
73% of spending goes to programs.
Governance
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for CORE CHARTER SCHOOLS: 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 CORE CHARTER SCHOOLS?
- CORE CHARTER SCHOOLS (California) receives grants from 1 organization whose IRS filings report $208 to it, the largest being AMAZONSMILE FOUNDATION ($208). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does CORE CHARTER SCHOOLS have?
- IRS filings report 1 organization giving $208 in grants to CORE CHARTER SCHOOLS, 1 of which have funded it in more than one year.
- Who is the largest funder of CORE CHARTER SCHOOLS?
- AMAZONSMILE FOUNDATION is the largest funder on record, with $208 in grants. The full list of funders is on this page.
- How can an organization like CORE CHARTER SCHOOLS 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 2018–2025), and the filings of 1 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