Public schools in Ontario, OR
9 public schools in Ontario, Oregon serve 2,652 students.
| School | Grades | Students | Student/teacher |
|---|---|---|---|
| Ontario High SchoolOntario SD 8C | 9–12 | 691 | 15.7 |
| Ontario Middle SchoolOntario SD 8C | 7–8 | 333 | 14.0 |
| Aiken Elementary SchoolOntario SD 8C | K–5 | 264 | 17.6 |
| Alameda Elementary SchoolOntario SD 8C | K–6 | 339 | 14.1 |
| Annex Charter School CharterAnnex SD 29 | K–8 | 79 | 8.8 |
| Cairo Elementary SchoolOntario SD 8C | K–5 | 124 | 12.4 |
| May Roberts Elementary SchoolOntario SD 8C | K–6 | 348 | 14.5 |
| Pioneer Elementary SchoolOntario SD 8C | K–5 | 112 | 14.0 |
| Four Rivers Community School CharterOregon Department of Education | K–12 | 362 | 17.2 |