| Seneca Twp HSD 160, IL (District) |
| Seneca Valley SD, PA (District) |
| Seneca-East Local School District, OH (District) |
| Sentinel, OK (District) |
| Sentinel Elementary District, AZ (District) |
| Sentral Comm School District, IA (District) |
| Sequatchie County, TN (ISD) |
| Sequatchie County, TN (District) |
| Sequim School District, WA (District) |
| Sequoia Choice Schools Lllp, AZ (District) |
| Sequoia Union Elementary, CA (District) |
| Sequoia Union High, CA (District) |
| Sequoyah, OK (District) |
| Sequoyah, NM (State) |
| Sequoyah County, OK (ISD) |
