| Clay County, AR (ISD) |
| Clay County, KY (Phantom) |
| Clay County, IL (ISD) |
| Clay County, MO (ISD) |
| Clay County, KS (ISD) |
| Clay County, NE (ISD) |
| Clay County, IA (ISD) |
| Clay County, TX (ISD) |
| Clay County, TN (ISD) |
| Clay County Schools, KY (District) |
| Clay County Schools, NC (District) |
| Clay County Schools, WV (District) |
| Clay Joint Elementary, CA (District) |
| Clay Local School District, OH (District) |
| Clay/Jasper/Richland/N Wayne RDS, IL (District) |
