For the 2026 school year, there are 11 public charter schools serving 4,319 students in Clackamas County, OR.
The top-ranked public charter schools in Clackamas County, OR are Three Rivers Charter School, Oregon Trail Academy and Springwater Environmental Sciences School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Clackamas County, OR public charter schools have an average math proficiency score of 40% (versus the Oregon public charter school average of 34%), and reading proficiency score of 61% (versus the 51% statewide average). Charter schools in Clackamas County have an average ranking of 9/10, which is in the top 20% of Oregon public charter schools.
Minority enrollment is 26% of the student body (majority Hispanic), which is less than the Oregon public charter school average of 29% (majority Hispanic).
Best Public Charter Schools in Clackamas County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Three Rivers Charter School
Charter School
(Math: 60-64% | Reading: 80-84%)
Rank:
Rank:
10/
Top 5%10
2565 Sw Ek Rd
West Linn, OR 97068
(503) 673-7850
West Linn, OR 97068
(503) 673-7850
Gr: 4-8 | 108 students Student-teacher ratio: 22:1 Minority enrollment: 40%
Rank: #22.
Oregon Trail Academy
Charter School
(Math: 60-64% | Reading: 75-79%)
Rank:
Rank:
10/
Top 5%10
36225 Se Proctor Rd
Sandy, OR 97055
(503) 668-5521
Sandy, OR 97055
(503) 668-5521
Gr: K-8 | 248 students Student-teacher ratio: 21:1 Minority enrollment: 21%
Rank: #33.
Springwater Environmental Sciences School
Charter School
(Math: 50-54% | Reading: 70-74%)
Rank:
Rank:
10/
Top 10%10
16491 S Springwater Rd
Oregon City, OR 97045
(503) 631-7700
Oregon City, OR 97045
(503) 631-7700
Gr: K-8 | 203 students Student-teacher ratio: 18:1 Minority enrollment: 17%
Rank: #44.
Clackamas Middle College
Charter School
(Math: 40-49% | Reading: 80-89%)
Rank:
Rank:
9/
Top 20%10
12021 Se 82nd Ave
Happy Valley, OR 97086
(503) 518-5925
Happy Valley, OR 97086
(503) 518-5925
Gr: 9-12 | 305 students Student-teacher ratio: 44:1 Minority enrollment: 28%
Rank: #55.
Cascade Heights Public Charter School
Charter School
(Math: 55-59% | Reading: 50-54%)
Rank:
Rank:
9/
Top 20%10
11326 Se 47th Ave
Portland, OR 97222
(503) 653-3996
Portland, OR 97222
(503) 653-3996
Gr: K-8 | 228 students Student-teacher ratio: 16:1 Minority enrollment: 29%
Rank: #66.
Alliance Charter Academy
Charter School
(Math: 40-44% | Reading: 60-64%)
Rank:
Rank:
9/
Top 20%10
16075 S Front Ave
Oregon City, OR 97045
(503) 785-8556
Oregon City, OR 97045
(503) 785-8556
Gr: K-12 | 419 students Student-teacher ratio: 17:1 Minority enrollment: 19%
Rank: #77.
Harmony Academy
Charter School
(Math: <50% | Reading: <50% )
Rank:
Rank:
8/
Top 30%10
2507 Christie Drive
Marylhurst, OR 97036
(503) 496-3929
Marylhurst, OR 97036
(503) 496-3929
Gr: 9-12 | 22 students Student-teacher ratio: 4:1 Minority enrollment: 41%
Rank: #88.
Molalla River Academy
Charter School
(Math: 30-34% | Reading: 35-39%)
Rank:
Rank:
5/
Bottom 50%10
16897 S Callahan Rd
Molalla, OR 97038
(503) 829-6672
Molalla, OR 97038
(503) 829-6672
Gr: K-8 | 224 students Student-teacher ratio: 17:1 Minority enrollment: 16%
Rank: #99.
Milwaukie Academy Of The Arts
Charter School
(Math: 20-29% | Reading: 40-49%)
Rank:
Rank:
5/
Bottom 50%10
11300 Se 23rd Ave
Portland, OR 97222
(503) 353-5834
Portland, OR 97222
(503) 353-5834
Gr: 9-12 | 281 students Student-teacher ratio: 281:1 Minority enrollment: 39%
Rank: #1010.
Clackamas Academy Of Industrial Sciences
Charter School
(Math: 15-19% | Reading: 45-49%)
Rank:
Rank:
4/
Bottom 50%10
1306 12th St
Oregon City, OR 97045
(503) 785-7860
Oregon City, OR 97045
(503) 785-7860
Gr: 6-12 | 325 students Student-teacher ratio: 22:1 Minority enrollment: 19%
Rank: #1111.
Oregon City Service Learning Academy
Charter School
(Math: ≤20% | Reading: 21-39%)
Rank:
Rank:
2/
Bottom 50%10
1404 7th St
Oregon City, OR 97045
(503) 785-8445
Oregon City, OR 97045
(503) 785-8445
Gr: 9-12 | 111 students Student-teacher ratio: 14:1 Minority enrollment: 33%
Frequently Asked Questions
What are the top-ranked public charter schools in Clackamas County, OR?
The top-ranked public charter schools in Clackamas County, OR include Three Rivers Charter School, Oregon Trail Academy and Springwater Environmental Sciences School.
How many public charter schools are located in Clackamas County?
13 public charter schools are located in Clackamas County.
What is the racial composition of students in Clackamas County?
Clackamas County public charter schools minority enrollment is 26% of the student body (majority Hispanic), which is less than the Oregon public charter schools average of 29% (majority Hispanic).
Which public charter schools in Clackamas County are often viewed compared to one another?
Popular comparisons of public charter schools in Clackamas County include: Clackamas Middle College vs. Clackamas Academy Of Industrial Sciences, Clackamas Academy Of Industrial Sciences vs. Alliance Charter Academy, Clackamas Academy Of Industrial Sciences vs. Clackamas Middle College
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