| Caledonia Public School District, MN (District) |
| Caledonia-mumford Central School District, NY (District) |
| Calera, OK (District) |
| Calexico Unified, CA (District) |
| Calhan Rj-1, CO (District) |
| Calhoun, FL (District) |
| Calhoun 01, SC (District) |
| Calhoun City, GA (District) |
| Calhoun Co School Dist, MS (District) |
| Calhoun County, MS (ISD) |
| Calhoun County, AL (ISD) |
| Calhoun County, AR (ISD) |
| Calhoun County, GA (District) |
| Calhoun County, WV (ISD) |
| Calhoun County, FL (ISD) |
