| Carmen High School of Science and, WI (PSA) |
| Carmen Middle School South, WI (PSA) |
| Carmi-White County CUSD 5, IL (District) |
| Carmichaels Area SD, PA (District) |
| Carnegie, OK (District) |
| Carney, OK (District) |
| 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) |
