| Clara B. Ford Academy (SDA), MI (PSA) |
| Clare Public Schools, MI (District) |
| Clare-Gladwin Regional Education Service District, MI (ISD) |
| Claremont Sau Office, NH (District) |
| Claremont School District, NH (District) |
| Claremont Unified, CA (District) |
| Claremore, OK (District) |
| Clarence Central School District, NY (District) |
| Clarenceville School District, MI (District) |
| Clarendon 01, SC (District) |
| Clarendon 02, SC (District) |
| Clarendon 03, SC (District) |
| Clarendon 04, SC (District) |
| Clarendon 06, SC (District) |
| Clarendon 80, SC (District) |
