| Circle Elem, MT (District) |
| Circle H S, MT (District) |
| Circle of Seasons CS, PA (PSA) |
| Circleville City School District, OH (District) |
| Cirrus Charter Academy, GA (PSA) |
| Cis Academy, NC (District) |
| Cisco ISD, TX (District) |
| Cissna Park CUSD 6, IL (District) |
| Citizens Academy, OH (PSA) |
| Citizens Academy Southeast, OH (PSA) |
| Citizens Leadership Academy, OH (PSA) |
| Citizens Leadership Academy East, OH (PSA) |
| Citizens Of The World Charter School 1, NY (PSA) |
| Citizens Of The World Charter School 2, NY (PSA) |
| Citizens of the World Charter Schools - Cincinnati, OH (PSA) |
