| Siatech Little Rock Charter, AR (District) |
| Sibley County, MN (ISD) |
| Sibley East School District, MN (District) |
| Sibley-Ocheyedan Comm School District, IA (District) |
| Side By Side Charter School District, CT (District) |
| Sidney Central School District, NY (District) |
| Sidney City School District, OH (District) |
| Sidney Comm School District, IA (District) |
| Sidney Elem, MT (District) |
| Sidney Gutierrez Middle School, NM (PSA) |
| Sidney H S, MT (District) |
| Sidney ISD, TX (District) |
| Sidney Public Schools, NE (District) |
| Siembra Leadership High School, NM (PSA) |
| Sierra Blanca ISD, TX (District) |
