For the 2026 school year, there are 7 public schools serving 2,668 students in Ontario, OR (there are 2 private schools, serving 150 private students). 95% of all K-12 students in Ontario, OR are educated in public schools (compared to the OR state average of 90%).
The top-ranked public schools in Ontario, OR are Annex Charter School, Ontario High School and Alameda Intermediate School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Ontario, OR public schools have an average math proficiency score of 20% (versus the Oregon public school average of 31%), and reading proficiency score of 41% (versus the 44% statewide average). Schools in Ontario have an average ranking of 4/10, which is in the bottom 50% of Oregon public schools.
Minority enrollment is 71% of the student body (majority Hispanic), which is more than the Oregon public school average of 43% (majority Hispanic).
Best Public 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.
Alameda Intermediate School
(Math: 28% | Reading: 34%)
Rank:
Rank:
4/
Bottom 50%10
1252 Alameda Dr
Ontario, OR 97914
(541) 889-5497
Ontario, OR 97914
(541) 889-5497
Gr: 4-5 | 355 students Student-teacher ratio: 16:1 Minority enrollment: 71%
Rank: #44.
Aiken Elementary School
(Math: 30-34% | Reading: 25-29%)
Rank:
Rank:
4/
Bottom 50%10
1297 W Idaho Ave
Ontario, OR 97914
(541) 889-5584
Ontario, OR 97914
(541) 889-5584
Gr: 2-3 | 333 students Student-teacher ratio: 16:1 Minority enrollment: 72%
Rank: #55.
Ontario Middle School
(Math: 12% | Reading: 48%)
Rank:
Rank:
4/
Bottom 50%10
573 Sw 2nd Ave
Ontario, OR 97914
(541) 889-5377
Ontario, OR 97914
(541) 889-5377
Gr: 6-8 | 471 students Student-teacher ratio: 15:1 Minority enrollment: 71%
Rank: #66.
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%
Rank: #77.
May Roberts Primary School
(Math: 19% | Reading: 33%)
Rank:
Rank:
3/
Bottom 50%10
590 Nw 8th St
Ontario, OR 97914
(541) 889-5379
Ontario, OR 97914
(541) 889-5379
Gr: K-1 | 302 students Student-teacher ratio: 14:1 Minority enrollment: 67%
Frequently Asked Questions
What are the top-ranked public schools in Ontario, OR?
The top-ranked public schools in Ontario, OR include Annex Charter School, Ontario High School and Alameda Intermediate School.
How many public schools are located in Ontario?
7 public schools are located in Ontario.
What percentage of students in Ontario go to public school?
95% of all K-12 students in Ontario are educated in public schools (compared to the OR state average of 90%).
What is the racial composition of students in Ontario?
Ontario public schools minority enrollment is 71% of the student body (majority Hispanic), which is more than the Oregon public schools average of 43% (majority Hispanic).
Which public schools in Ontario are often viewed compared to one another?
Popular comparisons of public schools in Ontario include: May Roberts Primary School vs. Aiken Elementary School, Four Rivers Community School vs. Aiken Elementary School, Alameda Intermediate School vs. Aiken Elementary School
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