| Sullivan County, NH (ISD) |
| Sullivan County, NY (ISD) |
| Sullivan County SD, PA (District) |
| Sullivan CUSD 300, IL (District) |
| Sullivan West Central School District, NY (District) |
| Sullivant Avenue Community School, OH (PSA) |
| Sulphur, OK (District) |
| Sulphur Bluff ISD, TX (District) |
| Sulphur Springs ISD, TX (District) |
| Sulphur Springs Union, CA (District) |
| Sultan School District, WA (District) |
| Summerfield Schools, MI (District) |
| Summers County, WV (ISD) |
| Summers County Schools, WV (District) |
| Summersville R-Ii, MO (District) |
