| Abbreviation | Definition |
|---|---|
| NKS | Norton Knatchbull School |
| NLDS | New Life Discovery Schools |
| NLHS | New Lisbon High School |
| NLHS | New London High School |
| NLHS | North Lincoln High School |
| NLHS | Northern Lehigh High School |
| NLS | Law School |
| NLS | New Lacanian School |
| NLSC | National Law School Consortium |
| NLSS | National Longitudinal Survey of Schools |
| NLSS | Navy Logistics Systems School |
| NLSS | North Lambton Secondary School |
| NLSS | Northern Lights Secondary School |
| NLSU | National Law School |
| NMCS | Nirmala Matha Central School |
| NMES | New Middletown Elementary School |
| NMH | Northfield Mount Hermon |
| NMHS | New Manchester High School |
| NMHS | New Milford High School |
| NMHS | Newark Memorial High School |