Top 8 charter schools in Maine (2025)
Publicly funded charter schools. Ranked by the Success Index (US) from official American data; 8 schools shown.
- 174Baxter Academy for Tech & SciencesPortland · Charter High42% Math proficiency · 384 students
- 267Ecology Learning CtrUnity · Charter High35.8% Free/reduced-price lunch · 120 students
- 355Fiddlehead School of Arts & ScienceGray · Charter Elementary34.5% Math proficiency · 177 students
- 452Maine Arts Academy SchoolAugusta · Charter High24.5% Math proficiency · 245 students
- 546Acadia Academy SchoolLewiston · Charter Elementary34.5% Math proficiency · 250 students
- 625Dimensions AcademyCornville · Charter Elementary12% Math proficiency · 177 students
- 724Overman AcademySkowhegan · Charter High15% Math proficiency · 170 students
- 823Maine Academy of Natural SciencesHinckley · Charter High15% Math proficiency · 177 students
| # | School | Sector | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Baxter Academy for Tech & Sciences Portland · High · Grades 9–12 | Charter | 73.5 Top 25% | 42% Math proficiency | 384 |
| 2 | Ecology Learning Ctr Unity · High · Grades 9–12 | Charter | 66.5 Top 25% | 35.8% Free/reduced-price lunch | 120 |
| 3 | Fiddlehead School of Arts & Science Gray · Elementary · Grades PK–8 | Charter | 54.8 Top 50% | 34.5% Math proficiency | 177 |
| 4 | Maine Arts Academy School Augusta · High · Grades 9–12 | Charter | 51.6 Top 50% | 24.5% Math proficiency | 245 |
| 5 | Acadia Academy School Lewiston · Elementary · Grades PK–6 | Charter | 46.0 Lower 50% | 34.5% Math proficiency | 250 |
| 6 | Dimensions Academy Cornville · Elementary · Grades K–8 | Charter | 24.8 Lower 50% | 12% Math proficiency | 177 |
| 7 | Overman Academy Skowhegan · High · Grades 6–12 | Charter | 23.9 Lower 50% | 15% Math proficiency | 170 |
| 8 | Maine Academy of Natural Sciences Hinckley · High · Grades 9–12 | Charter | 22.6 Lower 50% | 15% Math proficiency | 177 |
Baxter Academy for Tech & Sciences in Portland leads the 2025 list of charter schools in Maine with a Success Index (US) of 73.5. Of the 8 schools shown, 8 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 Maine?
Baxter Academy for Tech & Sciences in Portland ranks first among charter schools in Maine with a Success Index (US) of 73.5 out of 100 (Enrollment: 384).
How are charter schools in Maine 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.