· Public charity
Mastery Charter Schools Foundation
To develop and provide financial support for the mastery network of charter schools.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
The 13 grants below total $1,574,027 — the rows itemised in this filing. The $2,089,112 headline is the total grant expense reported on the return, so the remaining $515,085 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2025
- $10k–50k10 grants · $241k
- $50k–250k2 grants · $114k
- $250k+1 grant · $1.2M
| Recipient | Amount |
|---|---|
| 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 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 21%, against an area that typically sits at 17%. 98% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +66% since the first grant, against +36% for the ones you funded once.
15 repeat relationships — 13 still active in FY2025, 2 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
- MCMASTERY CHARTER HIGH SCHOOL9× · 2017–2025 · $16M · revenue +98%
- MCMASTERY CHARTER SCHOOL - GRATZ CAMPUS8× · 2017–2025 · $1.7M · revenue +13%
- MCMASTERY CHARTER SCHOOL JOHN WISTER CAMPUS7× · 2017–2025 · $1.6M · revenue +66%
Funded once
- SCSPRINGSIDE CHESTNUT HILL ACADEMYgraduatedone grant, 2017 · $227k · revenue +36%
- MCMASTERY CHARTER SCHOOL - MASTERY PRone grant, 2022 · $210k
- PYPHILADELPHIA YEARLY MEETING OF FRIENDSone grant, 2017 · $182k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
We provide accelerated curricula in all subjects with an emphasis on math and science.
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…
The charter schools mission is to prepare newarks next generation of children to be intelectually, emotionally, socially and financially responsible citizens.
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…
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.
To provide an academically challenging, knowledge-based curriculum, individually designed for each child's needs.
We are a student-centered learning community that inspires and supports all learners to achieve excellence through equitable, relevant learning experiences.
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.
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…
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…
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…
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…
For reference, the grantee most central to the portfolio’s shape is Mastery Prep Elementary Charter School and 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.
Your grantees are a median of 15 years old; the field is 14. You back the established end — and your money leans older still.
The field is 23% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 16% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
19 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your 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 ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
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
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Mastery Charter Schools Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
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.