| Successful Beginnings Charter School, AZ (PSA) |
| Sudan ISD, TX (District) |
| Sudbury, MA (District) |
| Suffield School District, CT (District) |
| Suffolk, VA (District) |
| Suffolk County, MA (ISD) |
| Suffolk County, NY (ISD) |
| Sugar Creek Charter, NC (District) |
| Sugar Valley Rural Cs, PA (PSA) |
| Sugar-Salem Joint District, ID (District) |
| Sullivan, MO (District) |
| Sullivan Boces, NY (ISD) |
| Sullivan County, MO (ISD) |
| Sullivan County, IN (ISD) |
| Sullivan County, TN (District) |
