| Hardin ISD, TX (District) |
| Hardin Northern Local School District, OH (District) |
| Hardin-Central C-2, MO (District) |
| Hardin-Houston Local School District, OH (District) |
| Hardin-Jefferson ISD, TX (District) |
| Harding Co School District, SD (District) |
| Harding County, NM (ISD) |
| Harding Township, NJ (District) |
| Hardy County, WV (ISD) |
| Hardy County Schools, WV (District) |
| Hardy Williams Academy Cs, PA (PSA) |
| Hardyston Township School District, NJ (District) |
| Harford County, MD (ISD) |
| Harford County Public Schools, MD (District) |
| Harlan Comm School District, IA (District) |
