Schools
All schools
Only schools that competed in 2026-27
| School Name | State | Teams |
|---|---|---|
| Seoul Foreign School | Unknown | 3 |
| Seoul International School | Unknown | 3 |
| Seton Hall Prep | NJ | 1 |
| Seton Hall Preparatory School | NJ | 1 |
| Seven Lakes High School | TX | 3 |
| Severna Park | MD | 1 |
| Shady Side Academy | PA | 3 |
| Shakopee | MN | 1 |
| Shanghai American-Puxi | Unknown | 2 |
| Sharon | MA | 1 |
| Shenzhen International | Unknown | 1 |
| Shippensburg Area Senior High School | PA | 1 |
| Shrewsbury | MA | 1 |
| Sidenerds | Unknown | 1 |
| Sidney | NE | 1 |
| Sierra Vista | CA | 3 |
| Silver Creek | IN | 2 |
| Singapore American | Unknown | 1 |
| Sissonville | WV | 2 |
| Skyline High School | MO | 1 |