| Casa Grande Union High School District, AZ (District) |
| Casa Richard Academy, MI (PSA) |
| Cascade, MT (District) |
| Cascade Career Prep High School, OH (PSA) |
| Cascade Career Prep High School, OH (PSA) |
| Cascade County, MT (ISD) |
| Cascade District, ID (District) |
| Cascade Elem, MT (District) |
| Cascade H S, MT (District) |
| Cascade School District, WA (District) |
| Cascade Sd 5, OR (District) |
| Cascade Union Elementary, CA (District) |
| Case Preparatory Academy, OH (PSA) |
| Caseville Public Schools, MI (District) |
| Casey County, KY (Phantom) |
