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Charter schools in Longmont, CO

3 schools in Longmont, 10 more within 15 miles. Public, and free to attend.

Public charter schools (tuition-free)

Longmont charter schools at a glance

3 public charter schools give Longmont as their address in the 2025-26 federal school directory, and 10 more are within 15 miles. The 3 in town had about 1,864 students in 2024-25. 3 teach elementary grades and 1 teach high school. Every one is a public school that charges no tuition.

1,864 students, 2024-25
1 high schools
$0 tuition

Networks and districts with the most of these schools: St. Vrain Valley School District No. Re1J (6), Boulder Valley School District No. Re2 (5). Names as reported to the federal directory.

Charter schools in Longmont (3)

Largest first. Enrollment and teachers are from 2024-25; schools new in 2025-26 have no count yet.

Charter school Grades Students (2024-25) Per teacher Phone
Twin Peaks Classical Academy K-12 879 15.3 (303) 772-7286
Flagstaff Charter Academy PK-8 725 13.2 (303) 651-7900
St. Vrain Community Montessori School PK-8 260 12.2 (303) 682-4339

Nearby, within 15 miles (10)

Charter schools in other towns, nearest first. Online schools are left out here because their address is an office.

Charter school Grades Students (2024-25) Per teacher Town Miles Phone
Carbon Valley Academy PK-8 245 11.7 Frederick 8 (303) 774-9555
Firestone Charter Academy PK-8 600 13.9 Firestone 8 (303) 772-3711
Boulder Prep Charter High School 9-12 114 10.3 Boulder 9 (303) 545-6186
Aspen Ridge Preparatory School K-8 581 15.3 Erie 10 (720) 242-6225
Peak to Peak Charter School K-12 1,447 17.7 Lafayette 12 (303) 453-4600
Justice High Charter School 6-12 108 19.9 Lafayette 13 (720) 935-1337
Prospect Ridge Academy K-12 1,478 19.2 Broomfield 13 (720) 399-0300
Horizons K-8 School K-8 358 14.1 Boulder 14 (720) 561-5580
Loveland Classical School K-12 1,032 16.8 Loveland 15 (970) 541-1507
Summit Middle Charter School 6-8 366 16.8 Boulder 15 (720) 561-3900

Charter schools: how they work

  • Public and free. NCES describes a public charter school as a publicly funded school, usually run by a group or organization under a contract (the charter) with the state, the district or another body. The federal definition says a charter school does not charge tuition.
  • Families choose it. Under the same definition, a charter school is one parents choose to send their children to, and it admits students by lottery when more apply than it has room for.
  • Its own rules, its own accountability. The charter frees the school from some state or local rules; in return it must meet the standards written in its charter. It is nonsectarian.
  • No program badge. ChoiceFunded’s program badges and “schools that accept” lists cover private schools only. Charter schools are listed separately here, with no badge, and are never counted with private schools.

Sources: 20 U.S.C. 7221i (federal Charter Schools Program definitions); NCES, Condition of Education: Public Charter School Enrollment. Each state writes its own charter law, so ask the school how enrollment works there.

Keep looking

Questions parents ask

How many charter schools are in Longmont?

3 public charter schools in the 2025-26 federal directory are in Longmont, and 10 more are within 15 miles. Twin Peaks Classical Academy, Flagstaff Charter Academy, St. Vrain Community Montessori School.

Do charter schools in Longmont charge tuition?

No. Charter schools are public schools, and the federal definition of a charter school says it does not charge tuition. Ask each school about fees for extras.

How do I enroll in a Longmont charter school?

Apply to each school directly. Under the federal definition, a charter school admits students by lottery when more apply than it has room for, so check each school’s application dates. Each state writes its own charter law.

School facts: U.S. Department of Education, Common Core of Data (2025-26 directory, 2024-25 enrollment and staff). Where our data comes from.

See charter schools How enrollment works