| CUSD 4, IL (District) |
| Cushing, OK (District) |
| Cushing ISD, TX (District) |
| Cushman School District, AR () |
| Cusick School District, WA (District) |
| Custer, MT (District) |
| Custer County, MT (ISD) |
| Custer County, NE (ISD) |
| Custer County, ID (ISD) |
| Custer County, OK (ISD) |
| Custer County, CO (ISD) |
| Custer County H S, MT (District) |
| Custer County School District C-1, CO (District) |
| Custer K-12 Schools, MT (District) |
| Custer School District, SD (District) |
