| Corpus Christi ISD, TX (District) |
| Corpus Christi Montessori School, TX (PSA) |
| Corrales International School, NM (PSA) |
| Corrections - Doe, DE (District) |
| Corrigan-Camden ISD, TX (District) |
| Corry Area SD, PA (District) |
| Corsica School District, SD (District) |
| Corsicana ISD, TX (District) |
| Cortez Park Charter Middle School Inc., AZ (PSA) |
| Cortland City School District, NY (District) |
| Cortland County, NY (ISD) |
| Corunna Public Schools, MI (District) |
| Corvallis K-12 Schools, MT (District) |
| Corvallis Sd 509J, OR (District) |
| Corwith-Wesley Comm School District, IA (District) |
