| Osage County, KS (ISD) |
| Osage County Ilc, OK (District) |
| Osage Hills, OK (District) |
| Osakis Public School District, MN (District) |
| Osawatomie, KS (District) |
| Osborn Elementary District, AZ (District) |
| Osborn R-O, MO (District) |
| Osborne County, KS (District) |
| Osborne County, KS (ISD) |
| Osceola, FL (District) |
| Osceola, MO (District) |
| Osceola Comm,Arts & Bus Ch Sch, AR () |
| Osceola County, FL (ISD) |
| Osceola County, IA (ISD) |
| Osceola Public Schools, NE (District) |
