| St. Landry Parish, LA (District) |
| St. Louis Charter School, MO (District) |
| St. Louis City, MO (District) |
| St. Louis County, MO (ISD) |
| St. Louis County School District, MN (District) |
| St. Louis Park Public School Dist., MN (District) |
| St. Louis Public Schools, MI (District) |
| St. Lucie, FL (District) |
| St. Lucie County, FL (ISD) |
| St. Martin Parish, LA (ISD) |
| St. Martin Parish, LA (District) |
| St. Mary Parish, LA (ISD) |
| St. Mary Parish, LA (District) |
| St. Mary'S County Public Schools, MD (District) |
| St. Marys City School District, OH (District) |
