| Colleton 01, SC (District) |
| Colleton County, SC (ISD) |
| Collier County, FL (ISD) |
| Collier County Schools, FL (District) |
| Collierville Municipal School District, TN (District) |
| Collin County, TX (ISD) |
| Collingswood Public Schools, NJ (District) |
| Collingsworth County, TX (ISD) |
| Collins Career Center, OH (District) |
| Collins-Maxwell Comm School District, IA (District) |
| Collinsville, OK (District) |
| Collinsville Area Career Ctr, IL (District) |
| Collinsville CUSD 10, IL (District) |
| Collinsville ISD, TX (District) |
| Colman-Egan School District, SD (District) |
