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California · Nonprofit

DUNN SCHOOL

DUNN SCHOOL (California) receives grants from 51 organizations whose IRS filings report $8,857,749 to it, the largest being THE ERIC AND LULU ROBERTS FAMILY FOUNDATION ($1,090,196). 26 of them have funded it in more than one year.

Revenue FY2025
$18M
Funders on record
51
Grants received
$8.9M
Net assets
$17M
26/51 repeat funderspeak grant-dependency 9%
01What it does

What Dunn School does

Mission

The mission of the Dunn School community is to educate the whole student to their fullest potential in preparation for a life of learning and leadership in society. The school accomplishes this mission by operating a 6-12th grade boarding and day school, which prepares students for a rigorous college curriculum.

As stated on its FY2025 Form 990.

Programs

  1. Dunn middle and Dunn upper schools provided 6th through 12th grade college preparatory education to approximately 90 boarding and 137 day students during the fiscal year.

    $14,418,023 spent$13,911,368 earned by the program
    98% of program spending
  2. Dunn Schools summer programs include day camps for 3rd through 8th graders,residential camps for 8th through 11th graders, and aquatics lessons for young children and families. Summer at Dunn programs offer fun and enriching opportunities to learn, explore, and strengthen academics. Dunn also rents out its facilities during summer to mission-aligned organizations offering camps and athletic programs to children and young adults.

    $325,469 spent$285,692 earned by the program
    2% of program spending

The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $14,743,492.

02The organization over time

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.

100 = 20172017 Revenue 100 ($14M) Expenses 100 ($12M) Net assets 100 ($14M)2018 Revenue 104 ($14M) Expenses 105 ($13M) Net assets 112 ($15M)2019 Revenue 100 ($14M) Expenses 110 ($13M) Net assets 115 ($16M)2020 Revenue 102 ($14M) Expenses 117 ($14M) Net assets 115 ($16M)2021 Revenue 113 ($16M) Expenses 107 ($13M) Net assets 134 ($19M)2022 Revenue 104 ($14M) Expenses 131 ($16M) Net assets 122 ($17M)2023 Revenue 114 ($16M) Expenses 140 ($17M) Net assets 113 ($16M)2024 Revenue 127 ($17M) Expenses 140 ($17M) Net assets 117 ($16M)2025 Revenue 129 ($18M) Expenses 143 ($17M) Net assets 120 ($17M)
'17'18'19'20'21'22'23'24'25
Revenue (129)Expenses (143)Net assets (120)Peer revenue range

Balance sheet

Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2018 to 2019, from $19M to $26M (+32%).

$17M
$19M
$26M
$25M
$29M
$26M
$24M
$26M
$27M
'17'18'19'20'21'22'23'24'25
Total assetsTotal liabilities

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.

2017
2018
2019
2020
2021
2022
2023
2024
2025
ContributionsProgram revenueInvestmentOther

Government-grant reliance: 2023 5% · 2024 4%. Grants only. Government contracts and fees sit inside program revenue.

13% of DUNN SCHOOL’s revenue is contributions — about as donation-reliant as the typical peer (23% for the typical peer).

This organization
Typical peer · 4,251 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 9 reported years ran a deficit.

$1.6M
’17
$1.6M
’18
$501k
’19
−$99k
’20
$2.7M
’21
−$1.6M
’22
−$1.2M
’23
$529k
’24
$389k
’25
1.0
months of
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.

Board chair

Guy Walker

Chairman

As listed on its FY2025 Form 990.

'17'18'19'20'21'22'23'24'25
Listed202223221723242319
Joined·+3+4+3+4+8+2+2+3
No longer listed·13492137
03Who funds it

Who funds it, year by year

2017 → 2023: the base broadened from 11 funders to 21 funders, grant income rose $370k → $1.4M.

15 of 51 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 21% 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 DUNN SCHOOL’s funders (the co-funder graph). Top 30 of 51 funders by total. 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

DUNN SCHOOL has a broad base — no single funder exceeds 12% of grant income, and it takes 6 funders to reach half.

the vertical line marks half of all grant income — 6 funders to its left

12%
largest funder
34%
top three
~15
effective funders

Largest funder’s share by year: 2017 31% · 2018 71% · 2019 25% · 2020 25% · 2021 24% · 2022 25% · 2023 17% — 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

48% of DUNN SCHOOL's funders are still giving 3 years after their first grant; 51% give in more than one year at all.

first grant+1y+2y+3y+4y+5y+6y

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

81% of DUNN SCHOOL's grant income comes from California funders.

MN
IL
MI
NY
MA
OR
IA
IN
CT
CA
UT
MO
WV
AZ
FL

In-state vs out-of-state, by year

’17
’18
’19
’20
’21
’22
’23
California out of state home

Funder states come from each funder’s own filing. $1.8M arriving through sponsors registered in 10 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.

04Its place in the field

Against its field

DUNN SCHOOL's funding base is broadening — from 11 funders to 21 as grant income climbed.

Operating margin2% · below the median
Months of reserve1.0mo · bottom quartile
Revenue growth (annualized)3% · bottom quartile

this organization peer median middle 50% of peers· 3,758 education nonprofits $10M–$100M, FY2025

Organizations like DUNN SCHOOL

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

05Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Where the money goes

85% of spending goes to programs.

Program 85%Management 12%Fundraising 2%

Governance

16
board members
100%
independent
✓Conflict-of-interest policy✓Whistleblower policy✓Document retention✓Board reviewed the 990✓Audited financials

Footprint & structure

Files a return copy in 1 state

CA

Screen this organization

A dated, signed PDF of the compliance screen for DUNN SCHOOL: 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.

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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 DUNN SCHOOL?
DUNN SCHOOL (California) receives grants from 51 organizations whose IRS filings report $8,857,749 to it, the largest being THE ERIC AND LULU ROBERTS FAMILY FOUNDATION ($1,090,196). 26 of them have funded it in more than one year.
How many funders does DUNN SCHOOL have?
IRS filings report 51 organizations giving $8,857,749 in grants to DUNN SCHOOL, 26 of which have funded it in more than one year.
Who is the largest funder of DUNN SCHOOL?
THE ERIC AND LULU ROBERTS FAMILY FOUNDATION is the largest funder on record, with $1,090,196 in grants. The full list of funders is on this page.
How can an organization like DUNN SCHOOL 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.

Play a game about who funds Dunn School →

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 51 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