| Southgate Academy Inc., AZ (District) |
| Southgate Community School District, MI (District) |
| Southgate Independent School District, KY (District) |
| Southington Local School District, OH (District) |
| Southington School District, CT (District) |
| Southland C-9, MO (District) |
| Southland College Prep Charter High School, IL (PSA) |
| Southland ISD, TX (District) |
| Southland Public School District, MN (District) |
| Southmoreland SD, PA (District) |
| Southold Union Free School District, NY (District) |
| Southport School Department, ME (District) |
| Southside Academy, OH (PSA) |
| Southside Academy Charter School, NY (PSA) |
| Southside Elementary, CA (District) |
