For the 2026 school year, there are 7 charter public middle schools serving 2,617 students in Washington.
Learn more about how charter schools work. The top-ranked charter public middle schools in Washington are Spokane International Academy, Catalyst Public Schools and Rainier Prep. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Washington charter public middle schools have an average math proficiency score of 44% (versus the Washington public middle school average of 37%), and reading proficiency score of 53% (versus the 51% statewide average).
Minority enrollment is 55% of the student body (majority Hispanic and Black), which is more than the Washington public middle school average of 50% (majority Hispanic).
Best Charter Public Middle Schools in Washington (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Spokane International Academy
Magnet School
Charter School
Charter School
(Math: 50% | Reading: 60%)
Rank:
Rank:
8/
Top 30%10
777 E Magnesium Rd
Spokane, WA 99208
(509) 209-8730
Spokane, WA 99208
(509) 209-8730
Gr: K-10 | 754 students Student-teacher ratio: 14:1 Minority enrollment: 39%
Rank: #22.
Catalyst Public Schools
Charter School
(Math: 45% | Reading: 60-64%)
Rank:
Rank:
7/
Top 50%10
1305 Ironsides Ave
Bremerton, WA 98310
(360) 207-0229
Bremerton, WA 98310
(360) 207-0229
Gr: K-8 | 483 students Student-teacher ratio: 15:1 Minority enrollment: 40%
Rank: #33.
Rainier Prep
Charter School
(Math: 50% | Reading: 51%)
Rank:
Rank:
7/
Top 50%10
10211 12th Ave S
Seattle, WA 98168
(206) 494-5979
Seattle, WA 98168
(206) 494-5979
Gr: 5-8 | 333 students Student-teacher ratio: 14:1 Minority enrollment: 95%
Rank: #44.
Summit Public School Atlas
Charter School
(Math: 43% | Reading: 52%)
Rank:
Rank:
6/
Top 50%10
9601 35th Avenue Sw
Seattle, WA 98126
(206) 307-7645
Seattle, WA 98126
(206) 307-7645
Gr: 6-12 | 545 students Student-teacher ratio: 19:1 Minority enrollment: 63%
Rank: #55.
Pinnacles Prep Charter School
Charter School
(Math: 30-34% | Reading: 50-54%)
Rank:
Rank:
5/
Bottom 50%10
504 S. Chelan Ave.
Wenatchee, WA 98801
(805) 669-8801
Wenatchee, WA 98801
(805) 669-8801
Gr: 6-9 | 221 students Student-teacher ratio: 16:1 Minority enrollment: 40%
Rank: #66.
Pullman Community Montessori
Charter School
(Math: 21-39% | Reading: 21-39%)
Rank:
Rank:
2/
Bottom 50%10
115 Nw State St, Rm 215
Pullman, WA 99163
(509) 336-5909
Pullman, WA 99163
(509) 336-5909
Gr: K-9 | 118 students Student-teacher ratio: 20:1 Minority enrollment: 32%
Rank: #77.
Rainier Valley Leadership Academy
Charter School
(Math: 10-14% | Reading: 25-29%)
Rank:
Rank:
1/
Bottom 50%10
6020 Rainier Avenue S
Seattle, WA 98118
(206) 659-0956
Seattle, WA 98118
(206) 659-0956
Gr: 6-12 | 163 students Student-teacher ratio: 14:1 Minority enrollment: 97%
Frequently Asked Questions
What are the top-ranked charter public middle schools in Washington?
The top-ranked charter public middle schools in Washington include Spokane International Academy, Catalyst Public Schools and Rainier Prep.
How many charter public middle schools are located in Washington?
7 charter public middle schools are located in Washington.
What is the racial composition of students in Washington?
Washington charter public middle schools minority enrollment is 55% of the student body (majority Hispanic and Black), which is more than the Washington public middle schools average of 50% (majority Hispanic).