| Abbreviation | Definition |
|---|---|
| HTSD | Hamilton Township School District |
| HTSD | Hampton Township School District |
| HTTA | Homeschooling Through the Ages |
| HUFSD | Hauppauge Union Free School District |
| HUFSD | Herricks Union Free School District |
| HUFSD | Huntington Union Free School District |
| HUFSD-MS | Herricks Union Free School District - Middle School |
| HUHS | Hartford Union High School |
| HUHS | Harwood Union High School |
| HVHS | Happy Valley High School |
| HVHS | Harbour View High School |
| HVHS | Hidden Valley High School |
| HVHS | Hoopa Valley High School |
| HVHS | Hoosac Valley High School |
| HVHS | Hutt Valley High School |
| HVMS | Happy Valley Middle School |
| HVMS | Hardin Valley Middle School |
| HVMS | Hidden Valley Middle School |
| HVMS | Holston Valley Middle School |
| HVMS | Hoosac Valley Middle School |