| HISD | Hallettsville Independent School District 
| Others |
| HISD | Hallsburg Independent School District
| Others |
| HISD | Hallsville Independent School District
| Others |
| HISD | Hamilton Independent School District
| Others |
| HISD | Hamlin Independent School District
| Others |
| HISD | Hamshire-Fannett Independent School District
| Others |
| HISD | Happy Independent School District
| Others |
| HISD | Hardin Independent School District
| Others |
| HISD | Hardin-Jefferson Independent School District
| Others |
| HISD | Harlandale Independent School District
| Others |
| HISD | Harleton Independent School District
| Others |
| HISD | Harmony Independent School District
| Others |
| HISD | Harper Independent School District
| Others |
| HISD | Harrold Independent School District
| Others |
| HISD | Hart Independent School District
| Others |
| HISD | Hartley Independent School District
| Others |
| HISD | Hawkins Independent School District
| Others |
| HISD | Hawkins Intermediate School District
| Others |
| HISD | Hawley Independent School District
| Others |
| HISD | Hearne Independent School District
| Others |
| HISD | Hedley Independent School District
| Others |
| HISD | Hemphill Independent School District
| Others |
| HISD | Hempstead Independent School District
| Others |
| HISD | Henderson Independent School District
| Others |
| HISD | Henrietta Independent School District
| Others |
| HISD | Hereford Independent School District
| Others |
| HISD | Hermleigh Independent School District
| Others |
| HISD | Hico Independent School District
| Others |
| HISD | Hidalgo Independent School District
| Others |
| HISD | Higgins Independent School District
| Others |
| HISD | High Island Independent School District
| Others |
| HISD | Highland Independent School District
| Others |
| HISD | Highway Information Services Division
| Others |
| HISD | Hillsboro Independent School District
| Others |
| HISD | Hitchcock Independent School District
| Others |
| HISD | Holland Independent School District
| Others |
| HISD | Holliday Independent School District
| Others |
| HISD | Hondo Independent School District
| Others |
| HISD | Hooks Independent School District
| Others |
| HISD | Houston Independant School District
| Others |
| HISD | Houston Independent School District
| Others |
| HISD | Houston ISD
| Others |
| HISD | Howe Independent School District
| Others |
| HISD | Hubbard Independent School District
| Others |
| HISD | Huckabay Independent School District
| Others |
| HISD | Hudson Independent School District
| Others |
| HISD | Hueston Independent Spit District
| Others |
| HISD | Huffman Independent School District
| Others |
| HISD | Hull-Daisetta Independent School District
| Others |
| HISD | Humble Independent School District
| Others |
| HISD | Hunt Independent School District
| Others |
| HISD | Huntington Independent School District
| Others |
| HISD | Huntsville Independent School District
| Others |
| HISD | Huron Intermediate School District
| Others |
| HISD | Hurst-Euless-Bedford Independent School District
| Others |
| HISD | Hutto Independent School District
| Others |