For the 2026 school year, there are 3 public high schools serving 1,207 students in Ontario, OR.
The top-ranked public high schools in Ontario, OR are Annex Charter School, Ontario High 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 high schools have an average math proficiency score of 20% (versus the Oregon public high school average of 24%), and reading proficiency score of 47% (versus the 48% statewide average). High schools in Ontario have an average ranking of 5/10, which is in the bottom 50% of Oregon public high schools.
Ontario, OR public high school have a Graduation Rate of 86%, which is more than the Oregon average of 82%.
The school with highest graduation rate is Ontario High School, with 85-89% graduation rate. Read more about public school graduation rate statistics in Oregon or national school graduation rate statistics.
Minority enrollment is 71% of the student body (majority Hispanic), which is more than the Oregon public high school average of 41% (majority Hispanic).
Best Public High 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-12 | 131 students Student-teacher ratio: 16:1 Minority enrollment: 24%
Rank: #22.
Ontario High School
(Math: 15-19% | Reading: 55-59%)
Rank:
Rank:
6/
Top 50%10
1115 W Idaho Ave
Ontario, OR 97914
(541) 889-5309
Ontario, OR 97914
(541) 889-5309
Gr: 9-12 | 709 students Student-teacher ratio: 18:1 Minority enrollment: 72%
Rank: #33.
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 | 367 students Student-teacher ratio: 18:1 Minority enrollment: 85%
Frequently Asked Questions
What are the top-ranked public high schools in Ontario, OR?
The top-ranked public high schools in Ontario, OR include Annex Charter School, Ontario High School and Four Rivers Community School.
How many public high schools are located in Ontario?
3 public high schools are located in Ontario.
What is the racial composition of students in Ontario?
Ontario public high schools minority enrollment is 71% of the student body (majority Hispanic), which is more than the Oregon public high schools average of 41% (majority Hispanic).
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