| Steward ESD 220, IL (District) |
| Stewardson-Strasburg CUD 5A, IL (District) |
| Stewart County, GA (ISD) |
| Stewart County, GA (District) |
| Stewart County, TN (District) |
| Stewart County, TN (ISD) |
| Stewartstown School District, NH (District) |
| Stewartsville C-2, MO (District) |
| Stewartville Public School District, MN (District) |
| Stidham, OK (District) |
| Stigler, OK (District) |
| Stillwater, OK (District) |
| Stillwater, MT (District) |
| Stillwater Area Public School Dist., MN (District) |
| Stillwater Central School District, NY (District) |
