Rankings · Oregon
Largest schools in Ontario, Oregon
Ranked by enrollment — academic rankings appear once test-score data is loaded.
| # | School | City | District | Enrollment |
|---|---|---|---|---|
| 1 | Ontario High School | Ontario | Ontario SD 8C | 686 |
| 2 | Ontario High School | Ontario | Ontario SD 8C | 652 |
| 3 | Ontario Middle School | Ontario | Ontario SD 8C | 361 |
| 4 | May Roberts Elementary School | Ontario | Ontario SD 8C | 356 |
| 5 | Alameda Elementary School | Ontario | Ontario SD 8C | 354 |
| 6 | Four Rivers Community School | Ontario | Oregon Department of Education | 350 |
| 7 | Aiken Elementary School | Ontario | Ontario SD 8C | 253 |
| 8 | Cairo Elementary School | Ontario | Ontario SD 8C | 140 |
| 9 | Pioneer Elementary School | Ontario | Ontario SD 8C | 113 |
| 10 | Annex Charter School | Ontario | Annex SD 29 | 61 |