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· Private foundation

The Charrock Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$34k
Granted FY2025still arriving
7
Grants FY2025still arriving
4
States reached
$10k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Science & Tech$420kEducation$169kHealth$95kYouth Development$40kPublic Benefit$33kArts & Culture$8k
02FY2025 · 7 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k5 grants · $14k
  • $10k–50k2 grants · $20k
$2,500
Median grant
4
States reached
$329k
Total assets
Largest grants
RecipientAmount
BERMUDA INSTITUTE FOR OCEAN SCIENCE$10,000
INSTITUTE FOR CITIZENS AND SCHOLARS$10,000
IVYMOUNT FOUNDATION$5,000
SEED FOUNDATION INC$2,500
FRACTURED ATLAS INC$2,500
ORCHARD FRIENDS SCHOOL$2,500
OUR KIDS READ ASSOCAITION$1,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

US giving: 45% of grant dollars ($343k). The need read here covers only this US portion; the 55% that went abroad ($420k) is mapped below.

show:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 11%, against an area that typically sits at 8%. 86% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 8%FRACTURED ATLAS: $3k → 9%FRACTURED ATLAS INC: $3k → 17%CHILDRENS HOSPITAL FOUNDATION: $20k → 14%ORCHARD FRIENDS SCHOOL: $3k → 7%PRINCETON UNIVERSITY: $20k → 11%OUR KIDS READ ASSOCAITION: $1k → 6%IVYMOUNT SCHOOL: $10k → 8%FRACTURED ATLAS INC: $3k → 17%CHILDRENS HOSPITAL FOUNDATION: $14k → 14%ORCHARD FRIENDS SCHOOL: $3k → 7%PRINCETON UNIVERSITY: $15k → 11%IVYMOUNT SCHOOL: $5k → 8%CHILDRENS HOSPITAL FOUNDATION: $14k → 14%INSTITUTE FOR CITIZENS AND SCHOLARS: $10k → 11%IVYMOUNT SCHOOL: $5k → 8%CHILDRENS HOSPITAL FOUNDATION: $12k → 14%INSTITUTE FOR CITIZENS & SCHOLARS: $10k → 11%IVYMOUNT FOUNDATION: $5k → 8%CHILDRENS HOSPITAL FOUNDATION: $10k → 14%INSTITUTE FOR CITIZENS & SCHOLARS: $10k → 11%IVYMOUNT SCHOOL: $5k → 8%CHILDRENS HOSPITAL FOUNDATION: $10k → 14%INSTITUTE FOR CITIZENS & SCHOLARS: $10k → 11%IVYMOUNT SCHOOL: $5k → 8%CHILDRENS HOSPITAL FOUNDATION: $10k → 14%PRINCETON UNIVERSITY: $60k → 11%IVYMOUNT SCHOOL INC: $5k → 8%SEED FOUNDATION INC: $3k → 14%PRINCETON UNIVERSITY INTERNSHIP-CIVIC SERVICE: $13k → 11%IVYMOUNT SCHOOL: $3k → 8%SEED FOUNDATION: $3k → 14%PRINCETON CLASS OF 1969 COMMUNITY SERVICE FUND: $10k → 11%SEED FOUNDATION: $3k → 14%PRINCETON UNIVERSITY INTERNSHIP-CIVIC SERVICE: $10k → 11%SEED FOUNDATION: $3k → 14%PRINCETON UNIVERSITY INTERNSHIP-CIVIC SERVICE: $10k → 11%SEED FOUNDATION: $3k → 14%SEED FOUNDATION: $3k → 14%SEED FOUNDATION: $3k → 14%SEED FOUNDATION INC: $3k → 14%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Beyond the US: 55% of all-years giving ($420k)

1 country, by the recipient’s country on the filing.

grant dollars sentlessmore
Bermuda$420k · 8 grants
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving. International giving is mapped by the recipient’s country from the same 990 filings; comparable need data isn’t available at that grain.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

97%of every dollar goes to organizations it has funded before.
$737k · 9 repeat orgs$26k to everyone else

9 repeat relationships: 4 still active in FY2025, 5 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

9
1

Total granted

$737k
$10k

Still filing today

78%
0%

New vs renewed · share of each year

In FY2025, 52% of grant dollars renewed an existing relationship; $16k went to new ones.

50%100%’17’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’19’20’21’22’23’24’25
EducationHealthArts & CultureOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • The Trustees of Princeton University
    3× · 2019–2024 · $95k · revenue +5%
  • CH
    CHILDREN'S HOSPITAL FOUNDATION
    7× · 2017–2024 · $90k · revenue +95%
  • IF
    INSTITUTE FOR CITIZENS AND SCHOLARS
    4× · 2021–2025 · $40k · revenue +315%

Funded once

  • PC
    PRINCETON CLASS OF 1969 COMMUNITY SERVICE FUND
    one grant, 2017 · $10k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Capitol Hill Day School

Capitol Hill Day School is a co-educational independent school serving students from pre-kindergarten through 8th grade. Capitol Hill Day School deeply engages a diverse community of students in connecting the classroom with the larger…

Education
2
Princeton International School of Mathematics and Science Inc

The purpose of the school is to promote, advance and sponsor charitable and educational activities.

Education
3
The Seed Public Charter School of Washington Dc

The seed public charter school of washington, dc is a public college-preparatory boarding school whose primary mission is to provide an outstanding intensive educational program that prepares children, both academically and socially, for…

Education
4
Inspired Teaching Demonstration Public Charter School

A professional learning community of master teachers and teacher residents who ensure that a diverse group of students achieve their potential as accomplished learners, thoughtful citizens, and imaginative and inquisitive problem solvers…

Education
5
Ivymount at the Stevens School Inc

The Stevens school provides school-based services for children with speech and language impairments, learning disabilities, intellectual disabilities, health impairments, and autism spectrum disorders.

—
6
The International School of San Francisco

Guided by the principles of academic rigor and diversity, the international school of san francisco offers programs of study in french and english to prepare its graduates for a world in which the ability to think critically and to…

Education
7
Institute for Student Achievement Foundation

Institute for student achievement foundation (isaf) raises funds to support the institute for student achievement (isa), which is a part of educational testing service, a section 501(c)(3) public charity, that wants all students,…

Education
8
The Philadelphia School

The philadelphia school educates children for a future that is impossible to know but not impossible to shape. learn here. go anywhere.

—
9
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
10
The Ideal School of Manhattan

An independent school providing a comprehensive educational program for children from K through 12th grade.

Education
11
The Mclean School of Maryland Inc

Mclean school's small classes and abilities model prepare bright students in kindergarten through twelfth grade, including those with dyslexia, anxiety, and attention issues, for college success.

Education
12
The Ivy School

To inspire children of diverse backgrounds to be lifelong, independent learners who value responsibility and embody peace.

Education
How this is measured
The grantee most central to the portfolio’s shape is Children's Hospital Foundation; the most unlike its peers is Fractured Atlas Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

8 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 8 of the 13 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
8/8
Grantees still filing
5/8
Grew since first funded

Where the money sits, by cause and then by grantee

BERMUDA INSTITUTE FOR OCEAN SCIENCES: $410,000 · OtherBERMUDA INSTITUTE FOR OCEAN SCIENCESINSTITUTE FOR CITIZENS AND SCHOLARS: $40,000 · OtherINSTITUTE FOR CITIZENS AND SCHOLARSPRINCETON UNIVERSITY INTERNSHIP-CIVIC SERVICE: $32,500 · OtherPRINCETON UNIVERSITY INTERNSHIP-CIVIC SERVICE+3 more: $21,000 · OtherThe Trustees of Princeton University: $95,000 · EducationThe Trustees of Princeto…The Ivymount School Inc: $37,500 · EducationThe Ivymount School IncTHE SEED FOUNDATION: $20,000 · EducationTHE SEED FOUNDATION+2 more: $10,000 · Education+2 moreCHILDREN'S HOSPITAL FOUNDATION: $89,600 · HealthCHILDREN'S HO…FRACTURED ATLAS INC: $7,500 · Arts & Culture
Other$503,500Education$162,500Health$89,600Arts & Culture$7,500

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetThe Trustees of Princeton University: $95,000 over 3y, 0.0% of budgetCHILDREN'S HOSPITAL FOUNDATION: $89,600 over 7y, 0.0% of budgetINSTITUTE FOR CITIZENS AND SCHOLARS: $40,000 over 4y, 0.2% of budgetThe Ivymount School Inc: $37,500 over 7y, 0.1% of budgetTHE SEED FOUNDATION: $20,000 over 8y, 0.1% of budgetFRACTURED ATLAS INC: $7,500 over 3y, 0.0% of budgetIvymount Foundation Inc: $5,000 over 1y, 0.7% of budgetORCHARD FRIENDS SCHOOL: $5,000 over 2y, 0.2% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds The Trustees of Princeton University ↗
  • Who funds CHILDREN'S HOSPITAL FOUNDATION ↗
  • Who funds INSTITUTE FOR CITIZENS AND SCHOLARS ↗
  • Who funds The Ivymount School Inc ↗
  • Who funds THE SEED FOUNDATION ↗
  • Who funds FRACTURED ATLAS INC ↗
  • Who funds Ivymount Foundation Inc ↗
  • Who funds ORCHARD FRIENDS SCHOOL ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

American Online Giving Foundation IncDE7.8× affinity4 shared granteesties to 3 of 3Hover any node to trace its alignments.Compare side by side →

Open a dossier: American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization The Charrock Foundation funds: left to right is the share of its income from government, bottom to top the share from The Charrock Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 11%
  • The Trustees of Princeton University: 11% of income from government
no gov moneyreceives it· size = income
2get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 13 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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