For the 2026 school year, there are 2 public charter schools serving 441 students in Ontario, OR.
The top-ranked public charter schools in Ontario, OR are Annex Charter School and Four Rivers Community School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Ontario, OR public charter schools have an average math proficiency score of 22% (versus the Oregon public charter school average of 34%), and reading proficiency score of 41% (versus the 51% statewide average). Charter schools in Ontario have an average ranking of 3/10, which is in the bottom 50% of Oregon public charter schools.
Minority enrollment is 75% of the student body (majority Hispanic), which is more than the Oregon public charter school average of 28% (majority Hispanic).
Best Public Charter Schools in Ontario, OR (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Annex Charter School
Charter School
(Math: 40-49% | Reading: 50-59%)
Rank:
Rank:
8/
Top 30%10
402 Annex Rd
Ontario, OR 97914
(541) 262-3280
Ontario, OR 97914
(541) 262-3280
Gr: K-8 | 79 students Student-teacher ratio: 9:1 Minority enrollment: 34%
Rank: #22.
Four Rivers Community School
Charter School
(Math: 15-19% | Reading: 35-39%)
Rank:
Rank:
3/
Bottom 50%10
2449 Sw 4th Ave
Ontario, OR 97914
(541) 889-3715
Ontario, OR 97914
(541) 889-3715
Gr: K-12 | 362 students Student-teacher ratio: 17:1 Minority enrollment: 84%
Frequently Asked Questions
What are the top-ranked public charter schools in Ontario, OR?
The top-ranked public charter schools in Ontario, OR include Annex Charter School and Four Rivers Community School.
How many public charter schools are located in Ontario?
2 public charter schools are located in Ontario.
What is the racial composition of students in Ontario?
Ontario public charter schools minority enrollment is 75% of the student body (majority Hispanic), which is more than the Oregon public charter schools average of 28% (majority Hispanic).