| Southwestern Illinois Career & Technical Education System, IL (District) |
| Southwestern Wisconsin School District, WI (District) |
| Southwestern-Jefferson Co Con, IN (District) |
| Southwick-Tolland-Granville Regional School District, MA (District) |
| Spackenkill Union Free School District, NY (District) |
| Spalding County, GA (District) |
| Spalding County, GA (ISD) |
| Spalding Public Schools, NE (District) |
| Sparta Area School District, WI (District) |
| Sparta Area Schools, MI (District) |
| Sparta CUSD 140, IL (District) |
| Sparta R-Iii, MO (District) |
| SPARTA TOWNSHIP PUBLIC SCHOOLS, NJ (District) |
| Spartanburg 01, SC (District) |
| Spartanburg 02, SC (District) |
