| Colona SD 190, IL (District) |
| Colonel Crawford Local School District, OH (District) |
| Colonial Beach, VA (District) |
| Colonial Heights, VA (District) |
| Colonial School District, DE (District) |
| Colonial SD, PA (District) |
| Colorado City Unified District, AZ (District) |
| Colorado County, TX (ISD) |
| Colorado Department of Education, CO (State) |
| Colorado ISD, TX (District) |
| Colorado River BOCES, CO (District) |
| Colorado River Union High School District, AZ (District) |
| Colorado School For The Deaf And Blind, CO (District) |
| Colorado Springs 11, CO (District) |
| Colquitt County, GA (ISD) |
