| Cleveland ISD, TX (District) |
| Cleveland Municipal CTPD, OH (District) |
| Cleveland Municipal School District, OH (District) |
| Cleveland Preparatory Academy, OH (PSA) |
| Cleveland Public School District, MN (District) |
| Cleveland School Dist, MS (District) |
| Clever R-V, MO (District) |
| Cliff Park High School, OH (PSA) |
| Cliffside Park School DIstrict, NJ (District) |
| Clifton ISD, TX (District) |
| Clifton Public Schools, NJ (District) |
| Clifton Unified District, AZ (District) |
| Clifton-Clyde, KS (District) |
| Clifton-fine Central School District, NY (District) |
| Climax Springs R-Iv, MO (District) |
