| Carl Junction R-I, MO (District) |
| Carle Place Union Free School District, NY (District) |
| Carlinville CUSD 1, IL (District) |
| Carlisle, MA (District) |
| Carlisle Area SD, PA (District) |
| Carlisle Comm School District, IA (District) |
| Carlisle County, KY (Phantom) |
| Carlisle County Schools, KY (District) |
| Carlisle ISD, TX (District) |
| Carlisle Local School District, OH (District) |
| Carlisle School District, AR (District) |
| Carlsbad Municipal Schools, NM (District) |
| Carlsbad Unified, CA (District) |
| CARLSTADT PUBLIC SCHOOL, NJ (District) |
| Carlstadt-East Rutherford Regional High School, NJ (District) |
