Top 14 charter schools in Connecticut (2025)
Publicly funded charter schools. Ranked by the Success Index (US) from official American data; 14 schools shown.
- 173Stamford Charter School for ExcellenceStamford · Charter Elementary97.5% Math proficiency · 543 students
- 263Odyssey Community SchoolManchester · Charter Elementary47% Math proficiency · 410 students
- 355Brass City Charter SchoolWaterbury · Charter Elementary52% Math proficiency · 401 students
- 451Side By Side Charter SchoolNorwalk · Charter Elementary52% Math proficiency · 236 students
- 551Integrated Day Charter SchoolNorwich · Charter Elementary42% Math proficiency · 364 students
- 641Booker T. Washington AcademyNew Haven · Charter Elementary47% Math proficiency · 404 students
- 735Elm City Montessori SchoolNew Haven · Charter Elementary24.5% Math proficiency · 312 students
- 835Park City Prep Charter SchoolBridgeport · Charter Middle33% Math proficiency · 434 students
- 934ExplorationsWinsted · Charter High10% Math proficiency · 77 students
- 1027Interdistrict School For Arts And CommunicationNew London · Charter Middle11% Math proficiency · 328 students
- 1126New Beginnings Inc Family AcademyBridgeport · Charter Elementary21% Math proficiency · 431 students
- 1224Common Ground High SchoolNew Haven · Charter High5% Math proficiency · 221 students
- 1319The Bridge AcademyBridgeport · Charter High12% Math proficiency · 281 students
- 1415Great Oaks Charter SchoolBridgeport · Charter High13% Math proficiency · 662 students
| # | School | Sector | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Stamford Charter School for Excellence Stamford · Elementary · Grades PK–8 | Charter | 73.2 Top 25% | 97.5% Math proficiency | 543 |
| 2 | Odyssey Community School Manchester · Elementary · Grades PK–8 | Charter | 62.8 Top 50% | 47% Math proficiency | 410 |
| 3 | Brass City Charter School Waterbury · Elementary · Grades PK–8 | Charter | 54.8 Top 50% | 52% Math proficiency | 401 |
| 4 | Side By Side Charter School Norwalk · Elementary · Grades PK–8 | Charter | 51.3 Top 50% | 52% Math proficiency | 236 |
| 5 | Integrated Day Charter School Norwich · Elementary · Grades PK–8 | Charter | 51.1 Top 50% | 42% Math proficiency | 364 |
| 6 | Booker T. Washington Academy New Haven · Elementary · Grades K–8 | Charter | 40.5 Lower 50% | 47% Math proficiency | 404 |
| 7 | Elm City Montessori School New Haven · Elementary · Grades PK–8 | Charter | 34.5 Lower 50% | 24.5% Math proficiency | 312 |
| 8 | Park City Prep Charter School Bridgeport · Middle · Grades 4–8 | Charter | 34.5 Lower 50% | 33% Math proficiency | 434 |
| 9 | Explorations Winsted · High · Grades 9–12 | Charter | 33.9 Lower 50% | 10% Math proficiency | 77 |
| 10 | Interdistrict School For Arts And Communication New London · Middle · Grades 4–8 | Charter | 26.9 Lower 50% | 11% Math proficiency | 328 |
| 11 | New Beginnings Inc Family Academy Bridgeport · Elementary · Grades PK–8 | Charter | 25.5 Lower 50% | 21% Math proficiency | 431 |
| 12 | Common Ground High School New Haven · High · Grades 9–12 | Charter | 24.0 Lower 50% | 5% Math proficiency | 221 |
| 13 | The Bridge Academy Bridgeport · High · Grades 7–12 | Charter | 18.5 Lower 50% | 12% Math proficiency | 281 |
| 14 | Great Oaks Charter School Bridgeport · High · Grades 6–12 | Charter | 15.2 Lower 50% | 13% Math proficiency | 662 |
Stamford Charter School for Excellence in Stamford leads the 2025 list of charter schools in Connecticut with a Success Index (US) of 73.2. Of the 14 schools shown, 14 are charter.
Scores are percentiles within school type, so a elementary school and a high school with the same score sit at the same point in their own distributions. Use the rankings to build a shortlist, then visit the schools and ask how they support students at your child's level.
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Frequently asked questions
What is the best charter school in Connecticut?
Stamford Charter School for Excellence in Stamford ranks first among charter schools in Connecticut with a Success Index (US) of 73.2 out of 100 (Enrollment: 543).
How are charter schools in Connecticut ranked?
Each school's Success Index (US) combines 4 factors: math proficiency (30%), reading proficiency (30%), community advantage (fewer free/reduced-price lunch) (25%), students per teacher (15%). Each factor is a percentile against schools of the same type across United States. Schools with fewer than 60 students are excluded from rankings.
Are these 2025 rankings official?
No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.