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Foundation Dossiers

South Carolina · Public charity

Limestone Charter Association

Our mission is to serve as the cornerstone of charter school authorizing in sc and to facilitate a positive educational environment that fosters school autonomy through support and oversight to our member schools.

$77M
Granted FY2026(still arriving)
17
Grants FY2026
12
Organizations funded FY2025
42%
First-time grantees FY2025
Read the full brief
Median grant, FY2026
$5,046,138
Largest grant, FY2026
$13,177,424
Organizations funded a year
3 to 12
FY2023 to FY2025
States reached, FY2026
1

How open it is to new grantees

In FY2025, 42% of the organizations Limestone Charter Association funded were first-time grantees, receiving 47% of its grant dollars.

New vs renewed · share of each year

In FY2025, 53% of grant dollars renewed an existing relationship; $40M went to new ones.

50%100%’24’25
RenewedFirst-time

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

’24’25
EducationOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2026still arriving15$77M20%
FY202512$85M42%
FY20247$35M57%
FY20233$22Mn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2023 to 2025.

Education$142M

Top grantees

Largest recipients by total granted, FY2023 to FY2026, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Horse Creek Academy$59,127,064492%
South Carolina Preparatory Academy$24,824,4242n/a
Orangeburg Consolidated School Distict 5 High School for Health Professions$23,536,806499%
Global Academy of South Carolina$16,228,295387%
Sc Leadership Preparatory School$16,026,4192n/a
Atlantic Collegiate Academy$13,793,963388%
Oceanside Collegiate Academy$12,208,165284%
Legion Collegiate Academy$12,126,019286%
Coastal High School$11,374,612497%
Mountain View Preparatory$10,585,366292%
Show all 15 grantees
All grantees of Limestone Charter Association by total granted
GranteeTotal grantedYearsShare of their budget
Horse Creek Academy$59,127,064492%
South Carolina Preparatory Academy$24,824,4242n/a
Orangeburg Consolidated School Distict 5 High School for Health Professions$23,536,806499%
Global Academy of South Carolina$16,228,295387%
Sc Leadership Preparatory School$16,026,4192n/a
Atlantic Collegiate Academy$13,793,963388%
Oceanside Collegiate Academy$12,208,165284%
Legion Collegiate Academy$12,126,019286%
Coastal High School$11,374,612497%
Mountain View Preparatory$10,585,366292%
Goucher Charter School$8,116,134386%
East Link Academy$8,097,336395%
Horse Creek Kershaw$2,012,7671n/a
Colearn of Sc$1,363,0341n/a
Arts in Motion Middle College$300,5211n/a

Where it is load-bearing

Limestone Charter Association supplied at least a quarter of the budget for 10 of its grantees at some point. The chart plots its 10 largest grantees; load-bearing ones sit top left.

25%50%75%100%$10Mgrantee revenue →↑ funder's share of their budgetHorse Creek Academy: $59,127,064 over 4y, 92% of budgetOrangeburg Consolidated School Distict 5 High School for Health Professions: $23,536,806 over 4y, 99% of budgetGlobal Academy of South Carolina: $16,228,295 over 3y, 87% of budgetAtlantic Collegiate Academy: $13,793,963 over 3y, 88% of budgetOceanside Collegiate Academy: $12,208,165 over 2y, 84% of budgetLegion Collegiate Academy: $12,126,019 over 2y, 86% of budgetCoastal High School: $11,374,612 over 4y, 97% of budgetMountain View Preparatory: $10,585,366 over 2y, 92% of budgetGoucher Charter School: $8,116,134 over 3y, 86% of budgetEast Link Academy: $8,097,336 over 3y, 95% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 10.

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 set of overlaps that mostly run through this funder rather than between each other.

Amazonsmile Foundation
Amazonsmile FoundationWA1.5× affinity5 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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.

Compare Limestone Charter Association with peer funders

About Limestone Charter Association

How much does Limestone Charter Association give?
Limestone Charter Association reported 17 grants totaling $77,370,857 in its FY2026 IRS filing. It funded between 3 and 12 organizations a year over FY2023 to FY2025.
What does Limestone Charter Association fund?
By grant dollars over FY2023 to FY2026, its largest causes are Education (100%).
Who are Limestone Charter Association's largest grantees?
By total granted over FY2023 to FY2026: Horse Creek Academy ($59M), South Carolina Preparatory Academy ($25M), Orangeburg Consolidated School Distict 5 High School for Health Professions ($24M).
Does Limestone Charter Association fund new organizations?
In FY2025, 42% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Limestone Charter Association?
Its strongest co-funders, measured against what their size predicts, include Amazonsmile Foundation.
Where is Limestone Charter Association based?
Limestone Charter Association is based in SC.

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 15 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 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Limestone Charter Association’s 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