| South Manor School District, NY (DISTRICT) |
| South Middlesex Regional Vocational Technical, MA (District) |
| South Middleton SD, PA (District) |
| South Milwaukee School District, WI (District) |
| South Monterey County Joint Union High, CA (District) |
| South Montgomery Com Sch Corp, IN (District) |
| South Mountain Secure Trmnt Un, PA (District) |
| South Mountain-Hickory Common School District, NY (District) |
| South Newton School Corp, IN (District) |
| South Nodaway Co. R-Iv, MO (District) |
| South O'Brien Comm School District, IA (District) |
| South Orange-Maplewood School District, NJ (District) |
| South Orangetown Central School District, NY (District) |
| South Page Comm School District, IA (District) |
| South Panola School District, MS (District) |
