The Exploratorium
Public records show a registered, tax-exempt organization in good standing.
What it says it does
THE EXPLORATORIUM IS A PUBLIC LEARNING LABORATORY EXPLORING THE WORLD THROUGH SCIENCE, ART, AND HUMAN PERCEPTION. OUR MISSION IS TO CREATE INQUIRY-BASED EXPERIENCES THAT TRANSFORM LEARNING WORLDWIDE.
- Income
- $64.0 million
- Spending
- $67.8 million
- Spent on programs
- 77%
- Reserves
- -5 months of spending
- Largest source of income
- fees for its services, 47%
- Employees
- 724
- Volunteers
- 175
- Highest pay
- $770,994, exec director
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Financial health
Weak: 45 out of 100. Higher than 11% of charities in its peer group (arts and culture, $10m to $100m).
Reserves
0 of 35Spendable reserves are negative: it owes or has committed more than it holds.
Debt
16 of 20It owes 16% of what it owns.
Living within its means
4 of 15Spending exceeded income by 6% of income.
Income trend
10 of 15Income fell 4% on the year before.
Spending floor
15 of 1577% of spending went to programs and raising each dollar of donations cost 13 cents.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Governance
Strong: 100 out of 100. Higher than 34% of charities in its peer group (arts and culture, $10m to $100m).
Independent board
25 of 2533 of 33 voting board members are independent.
Conflict of interest policy
15 of 15Has a written conflict of interest policy.
Whistleblower policy
8 of 8Has a written whistleblower policy.
Record keeping policy
7 of 7Has a written policy on keeping and destroying records.
Board minutes
5 of 5Keeps minutes of board meetings.
Board sees the tax return
10 of 10Gave the board a copy of this return before filing it.
Pay set independently
5 of 5Sets its chief executive's pay through independent review and comparison.
Independent check of accounts
15 of 15Its accounts were audited by an independent accountant.
No reported misuse
10 of 10Reports no diversion of assets, excess benefits or loans to insiders.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Impact evidence
Describes programs. Its tax return describes what it does but we have found no measurable results in it.
Programs described in its return (3)
- $34.1 million spent. MUSEUM AND VISITOR EXPERIENCE:WE'RE AN R&D LABORATORY THAT EXPERIMENTS WITH CUTTING-EDGE IDEAS. WE CREATE, EXPERIMENT, TEST, AND BUILD NEARLY EVERYTHING AT THE EXPLORATORIUM OURSELVES, ALWAYS LOOKING FOR THE MOST INTERESTING AND IMPORTANT IDEAS TO PURSUE, OFTEN PUSHING THE LIMITS OF WHAT'S POSSIBLE. IN THIS SENSE, WE'RE A CLASSIC RESEARCH-AND-DEVELOPMENT ORGANIZATION, CONSTANTLY CREATING NEW ACTIVITIES, WEBSITES, EVENTS, ARTWORKS, EXHIBITS, AND MORE.
- $7.5 million spent. GLOBAL COLLABORATIONS:WE LEARN AND SHARE WITH PARTNERS WORLDWIDE. BY DRAWING ON THE EXPLORATORIUM'S BROAD EXPERTISE, GLOBAL COLLABORATIONS IS ABLE TO PROVIDE A COMPREHENSIVE SET OF CREATIVE SERVICES FROM MASTER PLANNING TO PROGRAM DEVELOPMENT TO EXHIBIT FABRICATION AND INSTALLATION. WE LIKE TO BE AS FAR UPSTREAM IN OUR CLIENTS' CREATIVE PROCESS AS POSSIBLE, EXPLORING THE RICH QUESTIONS THAT LEAD TO TRULY AUTHENTIC, INNOVATIVE PROBLEM SOLVING.
- $10.3 million spent. EDUCATOR ENGAGEMENT:WE'RE AT THE FOREFRONT OF SCIENCE EDUCATION. BY MAKING SCIENCE VISIBLE, TOUCHABLE, AND ACCESSIBLE TO A WIDE VARIETY OF PEOPLE AT THE MUSEUM, ONLINE, AND IN THE CLASSROOM, OUR EXPLORE-FOR-YOURSELF WAY OF LEARNING AND TEACHING INFLUENCES SCIENCE EDUCATION WORLDWIDE. OUR PROFESSIONAL DEVELOPMENT PROGRAMS PROVIDE EDUCATORS WITH THE SKILLS, TOOLS, AND SUPPORT THEY NEED TO APPLY INQUIRY-BASED LEARNING AND TEACHING IN THEIR CLASSES. WE ALSO DESIGN PROGRAMS THAT MAKE CONNECTIONS BETWEEN THE TRADITIONALLY SEPARATE WORLDS OF FORMAL (SCHOOL) AND INFORMAL (MUSEUM) EDUCATION AND UNDERSTANDING.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Legitimacy checks
Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Has the IRS revoked its tax-exempt status? Passed.
Not on the IRS automatic revocation list.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated November 6, 2026.
Are donations tax-deductible? Passed.
On the IRS list of organizations eligible to receive tax-deductible contributions.
Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending June 2025.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since April 1969.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated November 4, 2026.
Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.