Charter Schools vs Public Schools: Performance Data
Published March 25, 2026 · NCES data
The charter vs. public school debate is one of the most politically charged topics in education. Setting aside the politics, what does the performance data actually show? Using DataScores from NCES data for thousands of schools, here is an honest comparison.
The Aggregate Numbers
| Metric | Charter Schools | District Schools |
|---|---|---|
| Median DataScore | 54/100 | 51/100 |
| % Scoring A or B | ~28% | ~24% |
| % Scoring D or F | ~22% | ~25% |
| Avg Growth Trend | +2.1 pts/yr | +1.4 pts/yr |
| Graduation Rate (HS) | ~84% | ~87% |
Approximate figures based on NCES data. Exact values depend on the year and sample.
The Key Finding: Variation Matters More Than Averages
The most important finding is not the 3-point average difference — it is the enormous variation within each group. The best charter schools outperform the best district schools. The worst charter schools underperform the worst district schools. Knowing a school is a charter tells you very little about its quality.
Where Charters Excel
- Growth rates: Charter schools show slightly faster improvement over time, suggesting their operational flexibility allows quicker adaptation
- Urban settings: Charter schools in large urban districts (NYC, Boston, New Orleans, Denver) tend to outperform district peers by larger margins
- Network schools: Schools belonging to high-performing charter networks (KIPP, Success Academy, Achievement First) significantly outperform both charter and district averages
Where District Schools Excel
- Graduation rates: District schools have slightly higher graduation rates on average
- Suburban settings: In suburban areas, district schools tend to match or outperform charter alternatives
- Special education: District schools generally serve a higher percentage of students with disabilities and English language learners
Search any school — charter or district — on our homepage. For state-level analysis, see school quality by state. For individual school rankings, see best public schools 2026.
Frequently Asked Questions
Do charter schools perform better than public schools?
The data shows enormous variation. Some charter school networks (KIPP, Success Academy, Uncommon Schools) consistently outperform district peers. Others perform at or below district averages. On aggregate, charter school DataScores are slightly above district school averages, but this masks the wide distribution.
What is a charter school?
A charter school is a publicly funded school that operates independently from the traditional district school system under a charter (contract) granted by a state or local authorizer. Charter schools have more flexibility in curriculum, staffing, and operations but must meet performance standards or risk losing their charter.
Are charter schools free?
Yes. Charter schools are public schools and cannot charge tuition. They receive public funding based on enrollment, typically at a per-pupil rate similar to (but often less than) district schools. Some charter schools supplement public funding with private philanthropy.
How many charter schools are in the U.S.?
There are approximately 7,800 charter schools in the United States, serving roughly 3.7 million students (about 7% of public school enrollment). Charter school enrollment has grown roughly 7% annually over the past decade.
About This Data
School data from NCES Common Core of Data via Urban Institute Education Data API. Charter/district classification from CCD school type field. See our methodology.