| Abbreviation | Definition |
|---|---|
| NRHS | Nazareth Regional High School |
| NRHS | New Richmond High School |
| NRHS | New Rochelle High School |
| NRHS | Newfound Regional High School |
| NRHS | North Reading High School |
| NRHS | North Ridgeville High School |
| NRHS | North Rockland High School |
| NRHS | North Rowan High School |
| NRHS | North Royalton High School |
| NRHS | Northumberland Regional High School |
| NRMS | Nash-Rocky Mount Public Schools |
| NRS | Norwegian-Russian School |
| NRS | Norwegian-Russian School (Norsk-russisk skole) |
| NRSD | Nashoba Regional School District |
| NRSG | Norwegian Researcher School in Geography |
| NRSN | Norwegian Research School in Neuroscience |
| NRSN | Norwegian Research School of Neuroscience |
| NRWCS | North Rose-Wolcott Central Schools |
| NSAA | Nebraska School Activities Association |
| NSAD | New School of Architecture and Design |