| Abbreviation | Definition |
|---|---|
| NSPS | North Smithfield Public Schools |
| NSQC | National School Quiz Championships |
| NSQC | National Schools Quiz Championship |
| NSR | New School of Reno |
| NSRP | Neighborhood School Readiness Project |
| NSRS | National School Reporting Service |
| NSS | Nashville Software School |
| NSS | North Stratfield School |
| NSS | Northern Secondary School |
| NSSD | North Sanpete School District |
| NSSD | North Santiam School District |
| NSSD | North Shore School of Dance |
| NSSE | National Study of School Evaluation |
| NSSF | Nigeria School Sports Federation |
| NSSR | New School for Social Research |
| NSSS | National Science Summer School |
| NSSS | North Surrey Secondary School |
| NSSW | National School Sport Week |
| NSSW | National Schools Snowsport Week |
| NST | National School of Technology |