| Harborfields Central School District, NY (District) |
| Hardee, FL (District) |
| Hardee County, FL (ISD) |
| Hardeman County, TX (ISD) |
| Hardeman County, TN (ISD) |
| Hardeman County, TN (District) |
| Hardeman R-X, MO (District) |
| Hardesty, OK (District) |
| Hardin Community School, OH (PSA) |
| Hardin County, TX (ISD) |
| Hardin County, TN (District) |
| Hardin County, KY (Phantom) |
| Hardin County, IL (ISD) |
| Hardin County, TN (ISD) |
| Hardin County, IA (ISD) |
