| Oconto Unified School District, WI (District) |
| Ocosta School District, WA (District) |
| Octorara Area SD, PA (District) |
| Ode Head Start, OR (District) |
| Ode Ltct District, OR (District) |
| Ode Ycep District, OR (District) |
| Odebolt Arthur Battle Creek Ida Grove Comm School District, IA (District) |
| Odell CCSD 435, IL (District) |
| Odem-Edroy ISD, TX (District) |
| Odessa R-Vii, MO (District) |
| Odessa School District, WA (District) |
| Odessa-montour Central School District, NY (District) |
| Odin PSD 722, IL (District) |
| Odyssey Academy, MN (District) |
| Odyssey Academy Inc, TX (PSA) |
