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Mastery Charter Schools Foundation at a glanceMostly funded, not a grantmaker: see who funds it →

· Public charity

Mastery Charter Schools Foundation

To develop and provide financial support for the mastery network of charter schools.

$2.1M
Granted FY2025still arriving
13
Grants FY2025still arriving
2
States reached
$1.2M
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
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.

Education$24M
02FY2025 · 13 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 13 grants below total $1,574,027, the rows itemized in this filing. The $2,089,112 headline is the total grant expense on the return; the other $515,085 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • $10k–50k10 grants · $241k
  • $50k–250k2 grants · $114k
  • $250k+1 grant · $1.2M
$29,594
Median grant
2
States reached
$118M
Total assets
Largest grants
RecipientAmount
MASTERY CHARTER HIGH SCHOOL$1,219,193
MASTERY CHARTER SCHOOL - SMEDLEY ELEMENTARY$58,500
MASTERY CHARTER SCHOOL - MANN ELEMENTARY$55,000
HARDY WILLIAMS ACADEMY CHARTER SCHOOL$47,540
GROVER CLEVELAND MASTERY CHARTER SCHOOL$34,010
MASTERY CHARTER SCHOOL - PICKETT CAMPUS$30,125
MASTERY CHARTER SCHOOL - GRATZ CAMPUS$29,594
MASTERY CHARTER SCHOOL - WISTER CAMPUS$28,000
MASTERY CHARTER SCHOOL - CLYMER ELEMENTARY$22,000
MASTERY CHARTER SCHOOL - HARRITY CAMPUS$15,025
MASTERY CHARTER SCHOOLS OF CAMDEN$12,990
MASTERY CHARTER SCHOOL - THOMAS CAMPUS$12,050
MASTERY CHARTER SCHOOL - FREDERICK DOUGLASS CAMPUS$10,000
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.

show:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 21%, against an area that typically sits at 17%. 98% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 17%Mastery Charter Schools of Camden: $112k → 12%The Philadelphia School: $60k → 22%Mastery Charter Schools of Camden: $97k → 12%Frederick Douglass Mastery Charter School: $681k → 22%Mastery Charter Schools of Camden: $78k → 12%Community Partnership School: $94k → 22%Mastery Charter Schools of Camden: $46k → 12%Frederick Douglass Mastery Charter School: $74k → 22%Springside Chestnut Hill Acacdemy: $227k → 22%MASTERY CHARTER SCHOOL - SMEDLEY ELEMENTARY: $59k → 22%Mastery Charter School - Smedley Elementary: $42k → 22%Mastery Charter School - Gratz Campus: $618k → 22%MASTERY CHARTER SCHOOL - GRATZ CAMP: $502k → 22%MASTERY CHARTER SCHOOL - MASTERY PR: $210k → 22%Mastery Charter School - Gratz Campus: $165k → 22%Mastery Charter School - Gratz Campus: $156k → 22%Mastery Charter School - Gratz Campus: $123k → 22%MASTERY CHARTER SCHOOL - MASTERY PR: $100k → 22%Mastery Charter School - Gratz Campus: $72k → 22%Little Flower Catholic High School: $45k → 22%Mastery Charter School - Wister Campus: $771k → 22%Mastery Charter School - Wister Campus: $760k → 22%Greene Street Friends School: $182k → 22%Mastery Charter School - Pickett Campus: $117k → 22%Mastery Charter School - Pickett Campus: $78k → 22%Mastery Charter School - Pickett Campus: $43k → 22%Mastery Charter School - Pickett Campus: $42k → 22%Mastery Charter School - Harrity Elementary: $89k → 22%Hardy Williams Academy Charter School: $64k → 22%HARDY WILLIAMS ACADEMY CHARTER SCHOOL: $48k → 22%Mastery Charter School - Shoemaker Campus: $191k → 22%Mastery Charter School - Shoemaker Campus: $57k → 22%MASTERY CHARTER SCHOOL - MANN ELEMENTARY: $55k → 22%Mastery Charter School - Thomas Campus: $140k → 22%Mastery Charter School - Thomas Campus: $71k → 22%Mastery Charter School - Thomas Campus: $47k → 22%Francis D Pastorius Mastery Charter School: $236k → 22%Mastery Charter High School: $3.1M → 22%Francis D Pastorius Mastery Charter School: $51k → 22%Mastery Charter High School: $2.6M → 22%Grover Cleveland Mastery Charter School: $46k → 22%Mastery Charter High School: $2.1M → 22%Mastery Charter High School: $1.9M → 22%MASTERY CHARTER HIGH SCHOOL: $1.9M → 22%Mastery Charter High School: $1.4M → 22%MASTERY CHARTER HIGH SCHOOL: $1.4M → 22%MASTERY CHARTER HIGH SCHOOL: $1.2M → 22%MASTERY CHARTER HIGH SCHOOL: $654k → 22%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.
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.
03Its grantees
repeat funding

Who it funds again

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

96%of every dollar goes to organizations it has funded before.
$23M · 15 repeat orgs$955k to everyone else

Grantees it renews have grown median revenue +66% since the first grant, against +36% for those funded once.

15 repeat relationships: 13 still active in FY2025, 2 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

15
9

Total granted

$23M
$955k

Median revenue growth · since first grant

+66%
+36%

Still filing today

100%
44%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time
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

  • MC
    MASTERY CHARTER HIGH SCHOOL
    9× · 2017–2025 · $16M · revenue +98%
  • MC
    MASTERY CHARTER SCHOOL - GRATZ CAMPUS
    8× · 2017–2025 · $1.7M · revenue +13%
  • MC
    MASTERY CHARTER SCHOOL JOHN WISTER CAMPUS
    7× · 2017–2025 · $1.6M · revenue +66%

Funded once

  • SC
    SPRINGSIDE CHESTNUT HILL ACADEMYgraduated
    one grant, 2017 · $227k · revenue +36%
  • MC
    MASTERY CHARTER SCHOOL - MASTERY PR
    one grant, 2022 · $210k
  • PY
    PHILADELPHIA YEARLY MEETING OF FRIENDS
    one grant, 2017 · $182k
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
Math & Science Academy

We provide accelerated curricula in all subjects with an emphasis on math and science.

Education
2
The Public School of Germantown

Germantown academy inspires students to be independent in thought; confident in expression; compassionate in spirit; collaborative in action; and honorable in deed. germantown academy is a private school educating students from pre-k…

Education
3
South Shore Charter School

The mission of south shore charter school is to cultivate students the tenacity, integrity, and curiosity needed to become innovative and socially responsible leaders, ready to face and solve the ever-changing challenges facing our…

Education
4
Marion P Thomas Charter School

The charter schools mission is to prepare newarks next generation of children to be intelectually, emotionally, socially and financially responsible citizens.

Education
5
Pennsylvania Leadership Charter School

To provide an academically challenging, knowledge-based curriculum, individually designed for each child's needs.

Education
6
21ST Century Cyber Charter School

Empower all students and families to become active participants in their own learning and equip them with skills for the future. we achieve this through engaging content, delvered by innovative teaching in a culture of caring.

Education
7
Minnesota Transitions Charter School

We are a student-centered learning community that inspires and supports all learners to achieve excellence through equitable, relevant learning experiences.

Education
8
Mark Day School

Innovative and full of heart, mark day school nurtures each child to pursue their curiosity, think critically, embrace challenge with courage and joy, and work in partnership with others to build more caring and inclusive communities.

—
9
The New American Academy Charter School

The new american academy charter school empowers learners and inspires leaders to make this a better world. through our collaborative teacher teams, mastery-based career ladder, and looping cycles, we offer personalized rigorous…

Education
10
Regents of the Mercersburg College

At mercersburg academy we embrace the values of hard work, character, and community while learning to balance independence with interdependence and individual humility with collective pride. our students commit to a life of learning, seek…

Education
11
Kipp Philadelphia Charter School

Together with families and communities, we create joyful, academically excellent schools that prepare students with the skills and confidence they need to pursue the paths they choose - college, career, and beyond - so they can lead…

Education
12
Emblaze Academy Charter School

Through rigorous curriculum and high quality instruction, provided within an invested and ambitious school community, emblaze academy charter school prepares all students in grades five through eight to thrive in high school and graduate…

Education
How this is measured
The grantee most central to the portfolio’s shape is Mastery Prep Elementary Charter School; the most unlike its peers is Springside Chestnut Hill Academy. 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

19 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. 19 of the 24 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)
0
Early backer (in before they grew)
19/19
Grantees still filing
17/19
Grew since first funded

Where the money sits, by cause and then by grantee

MASTERY CHARTER HIGH SCHOOL: $16,205,027 · EducationMASTERY CHARTER HIGH SCHOOLMASTERY CHARTER SCHOOL - GRATZ CAMPUS: $1,698,756 · EducationMASTERY CHARTER SCHOOL - GRATZ CAMPUSFREDERICK DOUGLASS MASTERY CHARTER SCHOOL: $804,208 · Education+13 more: $2,597,556 · Education+13 moreMASTERY CHARTER SCHOOL JOHN WISTER CAMPUS: $1,595,250 · OtherMASTERY CHA…MASTERY CHARTER SCHOOL PASTORIUS - RICHARDSON ELEMENTARY: $358,981 · OtherMASTERY CHA…MASTERY CHARTER SCHOOL - MASTERY PR: $210,000 · OtherMASTERY CHA…PHILADELPHIA YEARLY MEETING OF FRIENDS: $182,221 · OtherPHILADELPHI…+4 more: $142,455 · Other+4 more
Education$21,305,547Other$2,488,907

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

25%50%75%100%$10Mgrantee revenue →↑ funder's share of their budgetMASTERY CHARTER HIGH SCHOOL: $16,205,027 over 9y, 9.3% of budgetMASTERY CHARTER SCHOOL - GRATZ CAMPUS: $1,698,756 over 8y, 2.4% of budgetMASTERY CHARTER SCHOOL JOHN WISTER CAMPUS: $1,595,250 over 7y, 11% of budgetFREDERICK DOUGLASS MASTERY CHARTER SCHOOL: $804,208 over 8y, 5.8% of budgetMASTERY SCHOOLS OF CAMDEN INC: $396,963 over 9y, 0.2% of budgetMASTERY CHARTER SCHOOL PASTORIUS - RICHARDSON ELEMENTARY: $358,981 over 5y, 3.0% of budgetMASTERY CHARTER SCHOOL - PICKETT CAMPUS: $357,735 over 8y, 1.0% of budgetMASTERY CHARTER SCHOOL-SHOEMAKER CAMPUS: $275,019 over 6y, 1.8% of budgetMASTERY CHARTER SCHOOL - SMEDLEY ELEMENTARY: $269,115 over 9y, 0.4% of budgetMASTERY CHARTER SCHOOL - THOMAS CAMPUS: $241,329 over 6y, 0.9% of budgetSPRINGSIDE CHESTNUT HILL ACADEMY: $227,000 over 1y, 0.5% of budgetMASTERY CHARTER SCHOOL - HARRITY ELEMENTARY: $205,040 over 8y, 0.8% of budgetHARDY WILLIAMS ACADEMY CHARTER SCHOOL: $166,388 over 8y, 0.3% of budgetMASTERY CHARTER SCHOOL - CLYMER ELEMENTARY: $125,626 over 8y, 0.3% of budgetMASTERY PREP ELEMENTARY CHARTER SCHOOL: $100,020 over 1y, 0.9% of budgetMASTERY CHARTER SCHOOL - MANN ELEMENTARY: $96,069 over 7y, 0.4% of budgetCOMMUNITY PARTNERSHIP SCHOOL: $93,500 over 1y, 1.9% of budgetTHE PHILADELPHIA SCHOOL: $59,500 over 1y, 0.5% of budgetGROVER CLEVELAND-MASTERY CHARTER SCHOOL ELEMENTARY: $43,752 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 MASTERY CHARTER HIGH SCHOOL ↗
  • Who funds MASTERY CHARTER SCHOOL - GRATZ CAMPUS ↗
  • Who funds MASTERY CHARTER SCHOOL JOHN WISTER CAMPUS ↗
  • Who funds FREDERICK DOUGLASS MASTERY CHARTER SCHOOL ↗
  • Who funds MASTERY SCHOOLS OF CAMDEN INC ↗
  • Who funds MASTERY CHARTER SCHOOL PASTORIUS - RICHARDSON ELEMENTARY ↗
  • Who funds MASTERY CHARTER SCHOOL - PICKETT CAMPUS ↗
  • Who funds MASTERY CHARTER SCHOOL-SHOEMAKER CAMPUS ↗
  • Who funds MASTERY CHARTER SCHOOL - SMEDLEY ELEMENTARY ↗
  • Who funds MASTERY CHARTER SCHOOL - THOMAS CAMPUS ↗
  • Who funds SPRINGSIDE CHESTNUT HILL ACADEMY ↗
  • Who funds MASTERY CHARTER SCHOOL - HARRITY ELEMENTARY ↗
  • Who funds HARDY WILLIAMS ACADEMY CHARTER SCHOOL ↗
  • Who funds MASTERY CHARTER SCHOOL - CLYMER ELEMENTARY ↗
  • Who funds MASTERY PREP ELEMENTARY CHARTER SCHOOL ↗
  • Who funds MASTERY CHARTER SCHOOL - MANN ELEMENTARY ↗
  • Who funds COMMUNITY PARTNERSHIP SCHOOL ↗
  • Who funds THE PHILADELPHIA SCHOOL ↗
  • Who funds GROVER CLEVELAND-MASTERY CHARTER SCHOOL ELEMENTARY ↗

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.

Maurice Romy Fdn Dima…The Patricia Kind Fam…Business Leadership O…Central Pennsylvania …The Philadelphia Foun…Vanguard Charitable E…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Maurice Romy Fdn Dima-Br WdpPA15.8× affinity5 shared granteesties to 7 of 8Hover any node to trace its alignments.Compare side by side →

Open a dossier: Maurice Romy Fdn Dima-Br Wdp · The Patricia Kind Family Foundation · Business Leadership Organized for Catholic Schools · Central Pennsylvania Scholarship Fund · The Philadelphia Foundation · Vanguard Charitable Endowment Program · 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 Mastery Charter Schools Foundation funds: left to right is the share of its income from government, bottom to top the share from Mastery Charter Schools Foundation. Bigger dots raise more.

2025
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    17report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–40%
    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.
    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Mastery Charter Schools Foundation?

    Find your warmest path to Mastery Charter Schools Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

    Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

    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 24 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 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

    Play a game based on Mastery Charter Schools’ filings →

    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home