| Ogdensburg Borough School District, NJ (District) |
| Ogdensburg City School District, NY (District) |
| Ogilvie Public School District, MN (District) |
| Ogle Co Education Cooperative, IL (District) |
| Ogle County, IL (ISD) |
| Oglesby ESD 125, IL (District) |
| Oglesby ISD, TX (District) |
| Oglethorpe County, GA (District) |
| Oglethorpe County, GA (ISD) |
| Ohio & Wabash Valley Reg Voc Sys, IL (District) |
| Ohio CCSD 17, IL (District) |
| Ohio CHSD 505, IL (District) |
| Ohio College Preparatory School, OH (PSA) |
| Ohio Connections Academy Inc, OH (PSA) |
| Ohio Construction Academy, OH (PSA) |
