| Charles City, VA (District) |
| Charles City Comm School District, IA (District) |
| Charles County, MD (ISD) |
| Charles County Public Schools, MD (District) |
| Charles School at Ohio Dominican University, OH (PSA) |
| Charleston 01, SC (District) |
| Charleston County, SC (ISD) |
| Charleston CUSD 1, IL (District) |
| Charleston R-I, MO (District) |
| Charleston School District, AR (District) |
| Charlevoix Academy, MI (PSA) |
| Charlevoix Public Schools, MI (District) |
| Charlevoix-Emmet ISD, MI (ISD) |
| Charlo Elem, MT (District) |
| Charlo H S, MT (District) |
