| Abbreviation | Definition |
|---|---|
| NGPS | Northern Gateway Public Schools |
| NGS | National Graduate School |
| NGS | Nus Graduate School |
| NGSSE | National General Secondary School Examination |
| NHCS | Neighborhood House Charter School |
| NHCS | New Hanover County Schools |
| NHGS | North Halifax Grammar School |
| NHHS | Nathan Hale High School |
| NHHS | New Hampstead High School |
| NHHS | New Haven High School |
| NHHS | New Hope High School |
| NHHS | New Horizons High School |
| NHHS | Newport Harbor High School |
| NHHS | North Hagerstown High School |
| NHHS | North Hall High School |
| NHHS | North Hardin High School |
| NHHS | North Harford High School |
| NHHS | North Henderson High School |
| NHHS | North Hollywood High School |
| NHHS | North Hunterdon High School |