Arizona · Nonprofit
ILLUSTRATIVE MATHEMATICS
ILLUSTRATIVE MATHEMATICS (Arizona) receives grants from 9 organizations whose IRS filings report $25,633,982 to it, the largest being GATES FOUNDATION ($14,775,591). 6 of them have funded it in more than one year.
- Revenue FY2024
- $19M
- Funders on record
- 9
- Grants received
- $26M
- Net assets
- $8.6M
What Illustrative Mathematics does
Mission
At Illustrative Mathematics we are committed to creating a world where all learners know, use, and enjoy mathematics. We craft and deliver high-quality educational resources for teachers and students by developing great people who work in spirited (continued on sch o) teams to do extraordinary things.
As stated on its FY2024 Form 990.
Programs
Professional products and services: im(r) continued providing professional learning products and services that support teachers and school districts.in 2024, professional learning on im(r) k-5 math, im(r) 6-8 math, and im(r) 9-12 math reached more than 44,000 teachers across 1,851 events.in 2024, im(r) also delivered unit planning and facilitation guides to 31 school districts and certified 39 new facilitators to deliver high-quality professional learning experiences.
$10,604,645 spent$6,087,647 earned by the program62% of program spendingClassroom materials:im(r) continued providing high-quality classroom materials and family support to educators and school districts. In 2024, more than 3 million students had access to an im certified(r) print or premium digital version of the curriculum. We estimate that an additional 304,000 students had access to the free im(r) k-12 math curriculum based on website traffic.
$6,485,064 spent$8,289,977 earned by the program38% of program spending
The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $17,089,709.
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 $5.8M to $14M (+137%).
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 0% · 2020 9% · 2021 5% · 2022 4%. Grants only. Government contracts and fees sit inside program revenue.
22% of ILLUSTRATIVE MATHEMATICS’s revenue is contributions — about as donation-reliant as the typical peer (23% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 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
William Mccallum
CEO
As listed on its FY2024 Form 990.
The chief executive listed changed between the FY2019 and FY2020 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 2 funders to 3 funders, grant income fell $1.2M → $775k.
2 of 9 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 4% 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 ILLUSTRATIVE MATHEMATICS’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
ILLUSTRATIVE MATHEMATICS leans on a few funders — its largest provides 58% of grant income and the top three 80%; 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: 2017 72% · 2018 42% · 2019 47% · 2020 46% · 2021 50% · 2022 85% · 2023 65% — 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
44% of ILLUSTRATIVE MATHEMATICS's funders are still giving 3 years after their first grant; 67% 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
ILLUSTRATIVE MATHEMATICS draws 100% of its grant income from funders outside Arizona, across 5 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.0M arriving through sponsors registered in 2 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
ILLUSTRATIVE MATHEMATICS has grown faster than three-quarters of the 4,064 education nonprofits its size.
this organization peer median middle 50% of peers· 4,064 education nonprofits $10M–$100M, FY2024
Government funding ILLUSTRATIVE MATHEMATICS receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $1k on record.
- REFUNDS - GENERAL $1k
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 ILLUSTRATIVE MATHEMATICS
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 Arizona
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Public support
22%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for ILLUSTRATIVE MATHEMATICS: 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 ILLUSTRATIVE MATHEMATICS?
- ILLUSTRATIVE MATHEMATICS (Arizona) receives grants from 9 organizations whose IRS filings report $25,633,982 to it, the largest being GATES FOUNDATION ($14,775,591). 6 of them have funded it in more than one year.
- How many funders does ILLUSTRATIVE MATHEMATICS have?
- IRS filings report 9 organizations giving $25,633,982 in grants to ILLUSTRATIVE MATHEMATICS, 6 of which have funded it in more than one year.
- Who is the largest funder of ILLUSTRATIVE MATHEMATICS?
- GATES FOUNDATION is the largest funder on record, with $14,775,591 in grants. The full list of funders is on this page.
- How can an organization like ILLUSTRATIVE MATHEMATICS find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Arizona. 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 Illustrative Mathematics →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 9 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