Home Countries United States Education Illustrative Mathematics
Illustrative Mathematics logo

Illustrative Mathematics

Illustrative mathematics is a discerning community of educators dedicated to (continued on sch o) the coherent learning of mathematics. We craft and deliver high quality educational resources for …

Education Oro Valley, AZ EIN: 463513958 (IRS) Sign up to see website
Claim this charity
Ready to give?
100% goes to Illustrative Mathematics

GiveRadar doesn't take a cut. Donate directly on their site.

Make your donation
77
Integrity Assessment
Strong transparency
77/100 · methodology

About Illustrative Mathematics

Illustrative Mathematics provides resources and support for giving their students an enduring understanding of mathematics.

Founded
Headquarters
Oro Valley, AZ
Foundation type
Publicly-supported charity (509(a)(2))
NTEE code
B01
IRS subsection
501(c)(03)
Ruling date

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 2014

Mission

Illustrative mathematics is a discerning community of educators dedicated to (continued on sch o) the coherent learning of mathematics. We craft and deliver high quality educational resources for teachers and students.

Focus areas & reach

· What they work on and where
📚 Education · NTEE B01
Cause tags

How it stacks up against peers

· vs. 8 similar education in United States
Program spending This charity: 83%
Peer average: 83%
CEO comp as % of revenue This charity: 1.94%
Peer average: 0.48%
Integrity Assessment This charity: 77
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2024 · IRS 990 (FY2024)
$0.83
Program$0.83
83% to programs beats the peer average (83%) and beats the Charity Navigator "highly efficient" threshold (75%).

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

From what GiveRadar has verified so far, Illustrative Mathematics has a complete profile, cross-referenced across 3 independent sources including the IRS.

  • By reported annual revenue, it is larger than 94% of the 88,739 education charities in the United States with financial records on GiveRadar. See the filings
  • GiveRadar has verified more about this organization than about 82% of the 195,586 education charities in the United States it tracks, because GiveRadar has verified its financial disclosures and its governance. Most of those have little verified data on record yet. View this cohort
  • It has more complete governance disclosure than nearly all comparable charities, because GiveRadar has verified leadership, executive compensation, a mission statement and a founding date. See national comparisons
GiveRadar has verified
  • government registration
  • financial records (5 filed years)
  • disclosed leadership
  • a website
  • a donation page
  • third-party accreditation
Not yet verified by GiveRadar
  • a contact email
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

Illustrative Mathematics is a registered education nonprofit based in Oro Valley, AZ, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2013 and has been operating for 13 years. Its EIN is 463513958. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 77/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $19M in annual revenue. 98 officers and directors are publicly disclosed. No red flags have been detected.

Illustrative Mathematics's EIN (Employer Identification Number) is 463513958. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

Illustrative Mathematics has a GiveRadar Integrity Assessment of 77/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 77 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 83% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for education charities in United States is 90/100.

Illustrative Mathematics is located in Oro Valley, AZ, United States. The organization was established in 2013 and has been active for 13 years.

Based on official tax filings, Illustrative Mathematics has $19M in annual revenue. It allocates 83% of expenses to programs and services. This is in line with the average of 83% for education charities in United States. Its revenue is significantly above the peer average of $7M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Illustrative Mathematics is classified as an Education organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). It has $19M in annual revenue. The organization has 98 disclosed officers and directors.

No red flags have been detected for Illustrative Mathematics. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, Illustrative Mathematics holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 83% of expenses go to programs (the peer average is 83%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

Illustrative Mathematics provides resources and support for giving their students an enduring understanding of mathematics. Illustrative Mathematics is classified as an education organization registered in United States. The organization was founded in 2013.

Among education charities registered in United States: It allocates 83% of expenses to programs, in line with the peer average of 83%. Its annual revenue of $19M is well above the peer average of $7M.

Yes, donations to Illustrative Mathematics are generally tax-deductible in the United States. Illustrative Mathematics is a 501(c)(3) tax-exempt organization. Its EIN is 463513958, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$10M-$100M
83% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024, FY2023, FY2022, FY2021, FY2020.
Financial details are free - with a GiveRadar account

See 5 years of revenue, expense breakdowns, and balance sheet.

Sign up to view
Already have an account? Log in
No credit card · Takes 20 seconds

Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Staff & volunteers

From filings and published profiles

Employees
85

Leadership

From FY2024 filing

KR
Kristen W••••
CFO

Officers & trustees (25)

Source: Public filings

See full names, roles, and stories

25 officers and trustees on file - free with a GiveRadar account.

Already have an account? Log in
Sign up to view

Latest news

From global news sources

No recent news coverage found

News coverage will appear here when articles mention this organization.

Activity timeline

Filings and press mentions, merged

Form filed
$18.8M revenue
FY2024
IRS 990
Form filed
$16.9M revenue
FY2023
IRS 990
Form filed
$21.3M revenue
FY2022
IRS 990
Form filed
$11.7M revenue
FY2021
IRS 990
Form filed
$10.2M revenue
FY2020
IRS 990

No reviews yet. Be the first to share your experience.

Have you donated or volunteered here?

Share your experience - it takes 30 seconds. Verified reviews help other donors decide.

Sign up to write a review

Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education this charity 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
See all cause areas in United States

Most common causes in United States

Causes charities work on most, with this charity's causes ticked.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 98 disclosed in the public registry.
Supplementary verification
Charity Navigator

Data freshness

Last updated
Jun 6, 2026
Registry checked
Jun 6, 2026
Profile completeness
90%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 10
  • Financial data · FY2024 on record
  • Named leadership · 98 officers on file
  • Executive pay · Disclosed
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 2013
Not available · 1
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about Illustrative Mathematics

What is Illustrative Mathematics?
Illustrative Mathematics is a education publicly-supported charity (509(a)(2)) based in Oro Valley, United States. Illustrative Mathematics provides resources and support for giving their students an enduring understanding of mathematics.
When was Illustrative Mathematics founded?
Illustrative Mathematics was founded in 2013.
Who leads Illustrative Mathematics?
Kristen Welch serves as CFO.
Where is Illustrative Mathematics located?
Headquartered in Oro Valley, AZ, United States.
What is Illustrative Mathematics's annual budget?
Annual revenue for fiscal year 2024 is approximately $10M-$100M. 83% of expenses go to program services.
Is Illustrative Mathematics trustworthy?
Illustrative Mathematics has a GiveRadar Integrity Assessment of 77 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Illustrative Mathematics's registration number?
IRS EIN: 463513958.
What is Illustrative Mathematics's website?
http://www.illustrativemathematics.org