| Columbus Grove Local School District, OH (District) |
| Columbus H S, MT (District) |
| Columbus Humanities Arts and Technology Academy, OH (PSA) |
| Columbus ISD, TX (District) |
| Columbus Municipal School Dist, MS (District) |
| Columbus Performance Academy, OH (PSA) |
| Columbus Preparatory Academy, OH (PSA) |
| Columbus Preparatory and Fitness Academy, OH (PSA) |
| Columbus Public Schools, NE (District) |
| Columbus School District, WI (District) |
| Colusa County Office of Education, CA (District) |
| Colusa ESA, CA (ISD) |
| Colusa Unified, CA (District) |
| Colville School District, WA (District) |
| Comal County, TX (ISD) |
