| Oak Ridge R-Vi, MO (District) |
| Oak Run Elementary, CA (District) |
| Oak Valley Union Elementary, CA (District) |
| Oak View Union Elementary, CA (District) |
| Oakdale, OK (District) |
| Oakdale CCSD 1, IL (District) |
| Oakdale Joint Unified, CA (District) |
| Oakes 41, ND (District) |
| Oakesdale School District, WA (District) |
| Oakfield School District, WI (District) |
| Oakfield-alabama Central School District, NY (District) |
| Oakland Academy, MI (PSA) |
| Oakland Board of Education, NJ (District) |
| Oakland County Academy Of Media & Technology, MI (PSA) |
| Oakland Craig Public Schools, NE (District) |
