| Abbreviation | Definition |
|---|---|
| HISD | Harrold Independent School District |
| HISD | Hart Independent School District |
| HISD | Hartley Independent School District |
| HISD | Hawkins Independent School District |
| HISD | Hawkins Intermediate School District |
| HISD | Hawley Independent School District |
| HISD | Hearne Independent School District |
| HISD | Hedley Independent School District |
| HISD | Hemphill Independent School District |
| HISD | Hempstead Independent School District |
| HISD | Henderson Independent School District |
| HISD | Henrietta Independent School District |
| HISD | Hereford Independent School District |
| HISD | Hermleigh Independent School District |
| HISD | Hico Independent School District |
| HISD | Hidalgo Independent School District |
| HISD | Higgins Independent School District |
| HISD | High Island Independent School District |
| HISD | Highland Independent School District |
| HISD | Hillsboro Independent School District |