Best charter schools in St. Vrain Valley School District No. Re1J (2025)
Publicly funded charter schools. Ranked by the Success Index (US) from official American data; 5 schools in St. Vrain Valley School District No. Re1J, Colorado. Rank positions shown on each profile are within United States and Colorado.
- Elementary Schools in St. Vrain Valley School District No. Re1J
- Middle Schools in St. Vrain Valley School District No. Re1J
- High Schools in St. Vrain Valley School District No. Re1J
- Traditional Public Schools in St. Vrain Valley School District No. Re1J
- Schools by Math Proficiency in St. Vrain Valley School District No. Re1J
- Schools by Reading Proficiency in St. Vrain Valley School District No. Re1J
- Lowest Student–Teacher Ratio in St. Vrain Valley School District No. Re1J
- Largest Schools in St. Vrain Valley School District No. Re1J
- 172Flagstaff Charter AcademyLongmont · Charter Elementary49% Math proficiency · 725 students
- 258Firestone Charter AcademyFirestone · Charter Elementary35% Math proficiency · 600 students
- 350St. Vrain Community Montessori SchoolLongmont · Charter Elementary10% Math proficiency · 260 students
- 449Aspen Ridge Preparatory SchoolErie · Charter Elementary35% Math proficiency · 581 students
- 536Carbon Valley AcademyFrederick · Charter Elementary22% Math proficiency · 245 students
| # | School | Sector | Success Index (US) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Flagstaff Charter Academy Longmont · Elementary · Grades PK–8 | Charter | 71.5 Top 25% | 49% Math proficiency | 725 |
| 2 | Firestone Charter Academy Firestone · Elementary · Grades PK–8 | Charter | 57.5 Top 50% | 35% Math proficiency | 600 |
| 3 | St. Vrain Community Montessori School Longmont · Elementary · Grades PK–8 | Charter | 50.4 Top 50% | 10% Math proficiency | 260 |
| 4 | Aspen Ridge Preparatory School Erie · Elementary · Grades K–8 | Charter | 49.3 Lower 50% | 35% Math proficiency | 581 |
| 5 | Carbon Valley Academy Frederick · Elementary · Grades PK–8 | Charter | 35.7 Lower 50% | 22% Math proficiency | 245 |
Flagstaff Charter Academy in Longmont leads the 2025 list of charter schools in St. Vrain Valley School District No. Re1J with a Success Index (US) of 71.5. Of the 5 schools shown, 5 are charter.
For the full picture see the wider Colorado charter schools rankings, every school on the St. Vrain Valley School District No. Re1J page, or the comparison tool to put a shortlist side by side.
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Frequently asked questions
What is the best charter school in St. Vrain Valley School District No. Re1J?
Flagstaff Charter Academy in Longmont, Colorado ranks first among charter schools in St. Vrain Valley School District No. Re1J with a Success Index (US) of 71.5 out of 100 (Enrollment: 725).
How are charter schools in St. Vrain Valley School District No. Re1J 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.