| Abbreviation | Definition |
|---|---|
| GHS | Gardner High School |
| GHS | Gaylord High School |
| GHS | Georgetown High School |
| GHS | Germantown High School |
| GHS | Glastonbury High School |
| GHS | Gloucester High School |
| GHS | Goffstown High School |
| GHS | Government High School |
| GHS | Grafton High School |
| GHS | Grandview High School |
| GHS | Grant High School |
| GHS | Grapevine High School |
| GHS | Greeneville High School |
| GHS | Greenfield High School |
| GHS | Greenwich High School |
| GHS | Gresham High School |
| GHS | Grissom High School |
| GHS | Guilford High School |
| GHSD | General High School Diploma |
| GHSD | Gerrish Higgins School District |