| Clearwater R-I, MO (District) |
| Cleburne County, AL (ISD) |
| Cleburne County, AR (ISD) |
| Cleburne County, AL (District) |
| Cleburne ISD, TX (District) |
| Clementon Elementary School, NJ (District) |
| Cleora, OK (District) |
| Clermont County Educational Service Center, OH (ISD) |
| Clermont Northeastern Local School District, OH (District) |
| Cleveland, OK (District) |
| Cleveland, TN (District) |
| Cleveland Academy for Scholarship Technology and Leadership, OH (PSA) |
| Cleveland Arts and Social Sciences Academy, OH (PSA) |
| Cleveland College Preparatory School, OH (PSA) |
| Cleveland County, AR (ISD) |
