| Seiad Elementary, CA (District) |
| Seiling, OK (District) |
| Sejong Academy of Minnesota, MN (PSA) |
| Selah School District, WA (District) |
| Selby School District, SD (District) |
| Self Development Charter School, AZ (PSA) |
| Selfridge 8, ND (District) |
| Seligman Unified District, AZ (District) |
| Selinsgrove Area SD, PA (District) |
| Selkirk School District, WA (District) |
| Selma City, AL (District) |
| Selma Unified, CA (District) |
| Selmaville CCSD 10, IL (District) |
| Seminole, OK (District) |
| Seminole, FL (District) |
