| Sunnyside School District, WA (District) |
| Sunnyside Unified District, AZ (District) |
| Sunnyside Union Elementary, CA (District) |
| Sunnyvale, CA (District) |
| Sunnyvale ISD, TX (District) |
| Sunol Glen Unified, CA (District) |
| Sunray ISD, TX (District) |
| Sunrise Education Center, MI (PSA) |
| Sunrise R-Ix, MO (District) |
| Sunset Elem, MT (District) |
| Sunset Ridge SD 29, IL (District) |
| Suntex Sd 10, OR (District) |
| Superior Central School District, MI (District) |
| Superior K-12 Schools, MT (District) |
| Superior Public Schools, NE (District) |
