| Clear Creek ISD, TX (District) |
| Clear Creek Re-1, CO (District) |
| Clear Fork Valley Local School District, OH (District) |
| Clear Lake Comm School District, IA (District) |
| Clear Lake School District, WI (District) |
| Clearbrook-Gonvick School District, MN (District) |
| Clearfield Area SD, PA (District) |
| Clearfield Comm School District, IA (District) |
| Clearfield County, PA (ISD) |
| Clearfield County Ctc, PA (District) |
| Clearview Local School District, OH (District) |
| Clearview Regional High School District, NJ (District) |
| Clearwater, KS (District) |
| Clearwater County, MN (ISD) |
| Clearwater County, ID (ISD) |
