| Celina ISD, TX (District) |
| Cement, OK (District) |
| Centennial Boces, CO (District) |
| Centennial Boces, CO (District) |
| Centennial Public School District, MN (District) |
| Centennial Public Schools, NE (District) |
| Centennial R-1, CO (District) |
| Centennial SD, PA (District) |
| Centennial Sd 28J, OR (District) |
| Center 26 Jt, CO (District) |
| Center 58, MO (District) |
| Center Academy, MI (PSA) |
| Center Area SD, PA (District) |
| Center Cass SD 66, IL (District) |
| Center For Academic Success Inc., AZ (District) |
