| Conemaugh Township Area SD, PA (District) |
| Conemaugh Valley SD, PA (District) |
| Conestoga Public Schools, NE (District) |
| Conestoga Valley SD, PA (District) |
| Conewago Valley SD, PA (District) |
| Coney Island Preparatory Public Charter School, NY (PSA) |
| Confluence Academies, MO (District) |
| Congress Elementary District, AZ (District) |
| Connally ISD, TX (District) |
| Conneaut Area City School District, OH (District) |
| Conneaut SD, PA (District) |
| Connecticut Department of Education, CT (State) |
| Connecticut Technical High School System, CT (District) |
| Connellsville Area Career & Technical Center, PA (District) |
| Connellsville Area SD, PA (District) |
