Best Public Charter Schools in Longmont, CO (2025-26)

Best Longmont Public Charter Schools (2025-26)

For the 2025-26 school year, there are 4 public charter schools serving 2,509 students in Longmont, CO.

The top ranked public charter schools in Longmont, CO are Twin Peaks Charter Academy, Flagstaff Charter Academy and St. Vrain Community Montessori School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Longmont, CO public charter schools have an score of 42% (versus the Colorado public charter school average of 35%), and score of 55% (versus the 48% statewide average). Charter schools in Longmont have an average ranking of 7/10, which is in the top 50% of Colorado public charter schools.

Minority enrollment is 33% of the student body (majority Hispanic), which is less than the Colorado public charter school average of 52% (majority Hispanic).

Best Public Charter Schools in Longmont, CO (2025-26)

School
(Math and Reading Proficiency)

Location

Quick Facts

Rank: #11.

Twin Peaks Charter Academy

Charter School

(Math: 48% | Reading: 56%)
:

Top 30%

Add to Compare

340 South Sunset Street
Longmont, CO 80501
(303) 772-7286

Gr: K-12 | 852 students Student-teacher ratio: 17:1 Minority enrollment: 41%

Rank: #22.

Flagstaff Charter Academy

Charter School

(Math: 42% | Reading: 57%)
:

Top 30%

Add to Compare

2040 Miller Drive
Longmont, CO 80501
(303) 651-7900

Gr: PK-8 | 775 students Student-teacher ratio: 13:1 Minority enrollment: 33%

Rank: #33.

St. Vrain Community Montessori School

Charter School

(Math: ≥50% | Reading: 40-59%)
:

Top 30%

Add to Compare

1055 Delaware Ave.
Longmont, CO 80501
(303) 682-4339

Gr: PK-8 | 267 students Student-teacher ratio: 12:1 Minority enrollment: 19%

Rank: #44.

Firestone Charter Academy

Charter School

(Math: 34% | Reading: 50%)
:

Top 50%

Add to Compare

5753 Twilight Avenue
Longmont, CO 80504
(303) 772-3711

Gr: PK-8 | 615 students Student-teacher ratio: 13:1 Minority enrollment: 28%

[+] Show Closed 51�Թ�� in Longmont, Colorado

Longmont, Colorado 51�Թ�� (Closed)

School

Location

Quick Facts

Adult Educationlincoln Center (Closed 2014)

Alternative School

820 Main St
Longmont, CO 80501
(303) 678-5662

Gr: 6-12 | 122 students Minority enrollment: 57%

Heritage Middle School (Closed 2014)

233 East Mountain View
Longmont, CO 80501
(303) 772-7900

Gr: 6-8 | 414 students Student-teacher ratio: 14:1 Minority enrollment: 87%

Loma Linda Elementary School (Closed 2014)

333 East Mountain View
Longmont, CO 80501
(303) 772-4280

Gr: PK-5 | 380 students Student-teacher ratio: 15:1 Minority enrollment: 81%

St. Vrain Global Online Academy (Closed 2023)

1200 South Sunset Street
Longmont, CO 80501
(720) 494-3975

Gr: 9-12

St. Vrain Valley P-tech School (Closed 2018)

1200 South Sunset Street
Longmont, CO 80501
(720) 494-3969

Gr: 9-12 | 50 students Student-teacher ratio: 13:1 Minority enrollment: 76%

Spangler Elementary School (Closed 2014)

1440 Collyer St
Longmont, CO 80501
(720) 494-3761

Gr: PK-5 | 320 students Student-teacher ratio: 12:1 Minority enrollment: 89%

Ute Creek Secondary Charter Academy (Closed 2008)

Charter School

1198 Boston Avenue
Longmont, CO 80501
(303) 774-0066

Gr: 9-12 | 169 students Student-teacher ratio: 14:1 Minority enrollment: 33%

Frequently Asked Questions

What are the top ranked public charter schools in Longmont, CO?

The top ranked public charter schools in Longmont, CO include Twin Peaks Charter Academy, Flagstaff Charter Academy and St. Vrain Community Montessori School.

How many public charter schools are located in Longmont?

4 public charter schools are located in Longmont.

What is the racial composition of students in Longmont?

Longmont public charter schools minority enrollment is 33% of the student body (majority Hispanic), which is less than the Colorado public charter schools average of 52% (majority Hispanic).

Which public charter schools in Longmont are often viewed compared to one another?