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Public School Review - Established 2003

Best Boulder Public Charter Schools (2026)

For the 2026 school year, there are 3 public charter schools serving 838 students in Boulder, CO. The top-ranked public charter schools in Boulder, CO are Summit Middle Charter School and Horizons K-8 School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Boulder, CO public charter schools have an average math proficiency score of 75% (versus the Colorado public charter school average of 35%), and reading proficiency score of 81% (versus the 48% statewide average). Charter schools in Boulder have an average ranking of 10/10, which is in the top 5% of Colorado public charter schools.
Minority enrollment is 29% of the student body (majority Hispanic), which is less than the Colorado public charter school average of 53% (majority Hispanic).

Best Public Charter Schools in Boulder, CO (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Summit Middle Charter School
Charter School
(Math: 88% | Reading: 91%)
Rank:
10/
10
Top 1%
4655 Hanover Avenue
Boulder, CO 80305
(720) 561-3900
Gr: 6-8 | 366 students Student-teacher ratio: 17:1 Minority enrollment: 36%
Rank: #22.
Horizons K-8 School
Alternative School
Charter School
(Math: 53% | Reading: 65%)
Rank:
9/
10
Top 20%
4545 Sioux Drive
Boulder, CO 80303
(720) 561-5580
Gr: K-8 | 358 students Student-teacher ratio: 14:1 Minority enrollment: 17%
Rank: n/an/a
Boulder Prep Charter High School
Alternative School
Charter School
5075 Chaparral Court #1
Boulder, CO 80301
(303) 545-6186
Gr: 9-12 | 114 students Student-teacher ratio: 10:1 Minority enrollment: 43%

Frequently Asked Questions

What are the top-ranked public charter schools in Boulder, CO?
The top-ranked public charter schools in Boulder, CO include Summit Middle Charter School and Horizons K-8 School. Boulder has one of the highest concentrations of top-ranked public schools in Colorado.
How many public charter schools are located in Boulder?
3 public charter schools are located in Boulder.
What is the racial composition of students in Boulder?
Boulder public charter schools minority enrollment is 29% of the student body (majority Hispanic), which is less than the Colorado public charter schools average of 53% (majority Hispanic).

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