| Schuylkill Valley High School | - | Varsity | - | 0 | | |
| Scott County High School | - | Varsity | Large | 0 | | |
| Scott High School | - | Varsity | Medium | 0 | | |
| Scottsboro High School | - | Varsity | Medium | 0 | | |
| Scottsboro High School | - | Varsity | - | 0 | | |
| Scottsburg High School | - | Varsity | Large | 0 | | |
| Scottsburg High School | - | Varsity | Large | 0 | | |
| Scottsburg High School | - | Varsity | - | 0 | | |
| Scurry-Rosser High School | - | Varsity | Medium | 0 | | |
| Seabreeze High School | - | Varsity | Small | 0 | | |
| Seabreeze High School | - | Varsity | Small | 0 | | |
| Seaford High School | - | Varsity | Large | 0 | | |
| Seaford High School | - | Varsity | Small | 0 | | |
| Seaholm High School | - | Varsity | - | 0 | | |
| Sebastian River High School | - | Varsity | Small | 0 | | |
| Sebastian River High School | - | Varsity | Small | 0 | | |
| Sebastopol High School | - | Varsity | - | 0 | | |
| Seckman High School | - | Varsity | Large | 0 | | |
| Seckman High School | - | Varsity | - | 0 | | |
| Seckman High School | - | Varsity | Large | 0 | | |
| Seckman High School | - | Varsity | Medium | 0 | | |
| Seckman High School | - | Varsity | Medium | 0 | | |
| Seckman High School | - | Varsity | - | 0 | | |
| Second Baptist High School | - | Varsity | Large | 0 | | |
| Section High School | - | Varsity | Small | 0 | | |
| Section High School | - | Varsity | - | 0 | | |
| Seguin High School | - | Varsity | - | 0 | | |
| Seminary High School | - | Varsity | Large | 0 | | |
| Seminary High School | - | Varsity | Medium | 0 | | |
| Seminary High School | - | Varsity | Medium | 0 | | |
| Seminole Ridge High School | - | Varsity | Large | 0 | | |
| Senatobia High School | - | Varsity | Small | 0 | | |
| Senatobia High School | - | Varsity | Medium | 0 | | |
| Senatobia High School | - | Varsity | Medium | 0 | | |
| Senatobia High School | - | Varsity | Medium | 0 | | |
| Seneca Valley High School | - | Varsity | Large | 0 | | |
| Seneca Valley High School | - | Varsity | Large | 0 | | |
| Seneca Valley High School | - | Varsity | Medium | 0 | | |
| Seneca Valley High School | - | Varsity | Small | 0 | | |
| Seneca Valley High School | - | Varsity | Small | 0 | | |
| Sequin High School | - | Varsity | Large | 0 | | |
| Sequoia High School | - | Varsity | - | 0 | | |
| Sequoyah High School | - | Varsity | Medium | 0 | | |
| Serra Catholic High School | - | Varsity | Small | 0 | | |
| Seton Catholic High School | - | Varsity | Small | 0 | | |
| Seton Catholic High School | - | Varsity | - | 0 | | |
| Seton Catholic High School | - | Varsity | Small | 0 | | |
| Seton High School | - | Varsity | Small | 0 | | |
| Seton High School | - | Varsity | Small | 0 | | |
| Seven Lakes High School | - | Varsity | Large | 0 | | |
| Seven Lakes High School | - | Varsity | - | 0 | | |
| Seven Lakes High School | - | Varsity | - | 0 | | |
| Severance High School | - | Varsity | Medium | 0 | | |
| Sevier County High School | - | Varsity | Small | 0 | | |
| Seward Park High School | - | Varsity | Small | 0 | | |
| Seward Park High School | - | Varsity | Small | 0 | | |
| Seymour High School | - | Varsity | Medium | 0 | | |
| Seymour High School | - | Varsity | Medium | 0 | | |
| Seymour High School | - | Varsity | - | 0 | | |
| Shadow Creek High School | - | Varsity | - | 0 | | |
| Shadow Hills High School | - | Varsity | Small | 0 | | |
| Shadow Ridge High School | - | Varsity | Small | 0 | | |
| Shadow Ridge High School | - | Junior Varsity | Small | 0 | | |
| Shadow Ridge High School | - | Varsity | Small | 0 | | |
| Sharyland High School | - | Varsity | - | 0 | | |
| Sharyland Pioneer High School | - | Varsity | Large | 0 | | |
| Sharyland Pioneer High School | - | Varsity | - | 0 | | |
| Sharyland Pioneer High School | - | Varsity | - | 0 | | |
| Shawnee Heights High School | - | Varsity | - | 0 | | |
| Shawnee Mission East High School | - | Varsity | Large | 0 | | |
| Shawnee Mission East High School | - | Varsity | Large | 0 | | |
| Shawnee Mission East High School | - | Varsity | Large | 0 | | |
| Shawnee Mission East High School | - | Varsity | Large | 0 | | |
| Shawnee Mission East High School | - | Varsity | - | 0 | | |
| Shawnee Mission East High School | - | Varsity | - | 0 | | |
| Shawnee Mission South High School | - | Varsity | Small | 0 | | |
| Sheboygan South High School | - | Varsity | Small | 0 | | |
| Sheffield High School | - | Varsity | Small | 0 | | |
| Shelby County High School | - | Varsity | Medium | 0 | | |
| Shelby Valley High School | - | Varsity | Medium | 0 | | |
| Shelby Valley High School | - | Varsity | Large | 0 | | |
| Sherman High School | - | Varsity | - | 0 | | |
| Shiloh Christian High School | - | Varsity | Large | 0 | | |
| Shiloh Christian High School | - | Varsity | Medium | 0 | | |
| Shoemaker High School | - | Varsity | Medium | 0 | | |
| Sickles High School | - | Varsity | Small | 0 | | |
| Sickles High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Siegel High School | - | Varsity | Small | 0 | | |
| Sierra High School* | - | Varsity | Small | 0 | | |
| Sierra Pacific High School | - | Varsity | Large | 0 | | |
| Sierra Vista High School | - | Varsity | - | 0 | | |
| Sierra Vista High School | - | Varsity | Large | 0 | | |
| Sierra Vista High School | - | Varsity | - | 0 | | |
| Sierra Vista High School | - | Varsity | Medium | 0 | | |
| Silsbee High School | - | Varsity | - | 0 | | |