| HCSD | Hamburg Central School District
| Others |
| HCSD | Hamilton City School District
| Others |
| HCSD | Harbor Creek School District
| Others |
| HCSD | Harlan Community School District
| Others |
| HCSD | Harris County School District
| Others |
| HCSD | Harrison Central School District
| Others |
| HCSD | Harrison County School District
| Others |
| HCSD | Health Care Services Division
| Others |
| HCSD | Highland Central School District
| Others |
| HCSD | Hilliard City School District
| Others |
| HCSD | Hillsborough City School District
| Others |
| HCSD | Hillsborough County School District
| Others |
| HCSD | Hilton Central School District
| Others |
| HCSD | Hilton Central School District's
| Others |
| HCSD | Hinds County School District
| Others |
| HCSD | Human and Community Services Division
| Others |
| HCSD | Humboldt Community Services District
| Others |
| HCSD | Humboldt County School District
| Others |