| Southern Humboldt Joint Unified, CA (District) |
| Southern Huntingdon County SD, PA (District) |
| Southern In Education Center, IN (District) |
| Southern Kern Unified, CA (District) |
| Southern Lehigh SD, PA (District) |
| Southern Local School District, OH (District) |
| Southern Local School District, OH (District) |
| Southern Local School District, OH (District) |
| Southern Lyon County, KS (District) |
| Southern Michigan ISD, MI (ISD) |
| Southern Minn. Special Service Coop, MN (District) |
| Southern Mn Education Consortium, MN (District) |
| Southern Ohio Educational Service Center, OH (ISD) |
| Southern Okla. Technology Ctr, OK (District) |
| Southern Oregon Esd, OR (District) |
