| Smithtown Central School District, NY (District) |
| Smithville, OK (District) |
| Smithville ISD, TX (District) |
| Smithville R-Ii, MO (District) |
| Smoky Valley, KS (District) |
| Smyer ISD, TX (District) |
| Smyrna School District, DE (District) |
| Smyth, VA (District) |
| Snake River District, ID (District) |
| Snelling-Merced Falls Union Elementary, CA (District) |
| Snohomish County, WA (ISD) |
| Snohomish School District, WA (District) |
| Snook ISD, TX (District) |
| Snoqualmie Valley School District, WA (District) |
| Snowflake Unified District, AZ (District) |
