| Carney-Nadeau Public Schools, MI (District) |
| Caro Community Schools, MI (District) |
| Carolina International, NC (District) |
| Caroline, VA (District) |
| Caroline County, MD (ISD) |
| Caroline County Public Schools, MD (District) |
| Carondelet Leadership Academy, MO (District) |
| Carpe Diem - Meridian Campus, IN (District) |
| Carpe Diem - Northwest, IN (District) |
| Carpe Diem - Shadeland, IN (District) |
| Carpe Diem Collegiate High School, AZ (District) |
| Carpe Diem Schools, TX (PSA) |
| Carpinteria Unified, CA (District) |
| Carrabassett Valley School Department, ME (District) |
| Carrier Mills-Stonefort CUSD 2, IL (District) |
