| Calvert County Public Schools, MD (District) |
| Calvert ISD, TX (District) |
| Calvin, OK (District) |
| Calvin Nelms Charter Schools, TX (PSA) |
| CAM Comm School District, IA (District) |
| Camanche Comm School District, IA (District) |
| Camas County, ID (ISD) |
| Camas County District, ID (District) |
| Camas School District, WA (District) |
| Camas Valley Sd 21J, OR (District) |
| Cambria County, PA (ISD) |
| Cambria Heights SD, PA (District) |
| Cambria-Friesland School District, WI (District) |
| Cambrian, CA (District) |
| Cambridge, MA (District) |
