| Abbreviation | Definition |
|---|---|
| NSGE | National Strategy for Girls Education |
| NSHE | Nevada System of Higher Education |
| NSI | Network For Student Information |
| NSI | Newport, Sammamish, Interlake, |
| NSL | Never Stop Learning |
| NSL | Norwegian Sign Language |
| NSLA | National School Lunch Act |
| NSLP | National School Lunch Program |
| NSLP | National Service Learning Partnership |
| NSLW | National School Lunch Week |
| NSN | National School Network |
| NSSEA | National School Supply and Equipment Association |
| NSSED | North Shore Special Education District (Highland Park, IL) |
| NSSED | Northern Suburban Special Education District |
| NSTA | National Science Teacher Association |
| NSTA | National Science Teachers Association |
| NSTA | National Substitute Teachers Alliance |
| NSTC | Nova Scotia Teachers College |
| NSTES | North Sanpete Teacher Evaluation System |
| NSTI | National Summer Teacher Institute |