School Directory
| School/Organization | City | State | Country |
|---|---|---|---|
| South Kent School | South Kent | Connecticut | United States |
| South Kingstown High School | Wakefield | Rhode Island | United States |
| South Kitsap High School | Port Orchard | Washington | United States |
| South Lexington High School | Lexington | South Carolina | United States |
| South Mecklenburg High School | Charlotte | North Carolina | United States |
| South Newton High School | Kentland | Indiana | United States |
| South Park High School | South Park | Pennsylvania | United States |
| South Portland High School | South Portland | Maine | United States |
| South Putnam Middle/High School | Greencastle | Indiana | United States |
| South Side Area S/D | Hookstown | Pennsylvania | United States |
| Southern Garrett High School | Oakland | Maryland | United States |
| Southern Regional High School | Manahawkin | New Jersey | United States |
| Southern Wesleyan University | Central | South Carolina | United States |
| Southmont High School | Crawfordsville | Indiana | United States |
| Southmoore High School | Moore | Oklahoma | United States |
| Southmoore high school | Moore | Oklahoma | United States |
| Southport High School | Indianapolis | Indiana | United States |
| Southwest Guilford High School / Atrium Health Wake Forest Baptist | High Point | North Carolina | United States |
| Spanish Fork High School | Spanish Fork | Utah | United States |
| Sparta High School | Sparta | New Jersey | United States |
| Spartanburg High School | Spartanburg | South Carolina | United States |
| Spring Valley High School | Columbia | South Carolina | United States |
| Spring-Ford Area High School | Royersford | Pennsylvania | United States |
| Springdale Junior Senior High School | Springdale | Pennsylvania | United States |
| Springfield Catholic High School | Springfield | Missouri | United States |
| St Albert Catholic High School | Council Bluffs | Iowa | United States |
| St Joseph's Preparatory School | Philadelphia | Pennsylvania | United States |
| St Mark's School | Southborough | Massachusetts | United States |
| St. Andrew's School | Savannah | Georgia | United States |
| St. Andrew's School | Barrington | Rhode Island | United States |
| St. Augustine High School | San Diego | California | United States |
| St. Augustine Preparatory Academy | Milwaukee | Wisconsin | United States |
| St. Benedict at Auburndale High School | Cordova | Tennessee | United States |
| St. Bernard-Elmwood Place High School | Cincinnati | Ohio | United States |
| St. Catherine's School | Richmond | Virginia | United States |
| St. Charles Community College | Cottleville | Missouri | United States |
| St. Edward's University | Austin | Texas | United States |
| St. Francis High School | Mountain View | California | United States |
| St. George's School | MIDDLETOWN | Rhode Island | United States |
| St. Helens High School | St. Helens | Oregon | United States |
| St. John's College High School | Washington | District of Columbia | United States |
| St. Joseph's/Candler Hospital Sports Medicine | Savannah | Georgia | United States |
| St. Mary's Ryken High School | Leonardtown | Maryland | United States |
| St. Paul Johnson High School | St. Paul | Minnesota | United States |
| St. Paul's School | Covington | Louisiana | United States |
| St. Paul's School for Girls | Brooklandville | Maryland | United States |
| St. Peter High School | St. Peter | Minnesota | United States |
| St. Pius X High School | Kansas City | Missouri | United States |
| St. Thomas Aquinas Academy | Marinette | Wisconsin | United States |
| St.Amant High School | St Amant | Louisiana | United States |
| Stadium High School | Tacoma | Washington | United States |
| Stafford Municipal School District | Stafford | Texas | United States |
| Stanton College Preparatory | Jacksonville | Florida | United States |
| STEAM Academy at McCluer South-Berkeley High School | Ferguson | Missouri | United States |
| Steele High School | Cibolo | Texas | United States |
| Stephen F Austin High School | Richmond | Texas | United States |
| Stephen F. Austin High School | Sugar Land | Texas | United States |
| Stevens Point Area Senior High | Stevens Point | Wisconsin | United States |
| Stillman Valley High School | Stillman Valley | Illinois | United States |
| Stillwater Christian School | Kalispell | Montana | United States |
| Stratford High SChool | Goose Creek | South Carolina | United States |
| Sugar Valley Regional Charter School / UPMC | Loganton, | Pennsylvania | United States |
| Sumner High School | Sumner | Washington | United States |
| Sunrise Mountain High School | Peoria | Arizona | United States |
| SUNY Oswego | Oswego | New York | United States |
| Suring High School | Suring | Wisconsin | United States |
| Sussex Technical High School | Georgetown | Delaware | United States |
| Syosset Central School District | Syosset | New York | United States |
| Taft Information Technology High School | Cincinnati | Ohio | United States |
| Tahquitz High School | Hemet | California | United States |
| Taipei American School | Shilin District | Taipei City | Taiwan |
| Team HEAL - Carson High School | Carson | California | United States |
| Teaneck High School | Teaneck | New Jersey | United States |
| Tecumseh Junior High School | Lafeyette | Indiana | United States |
| Telstar Middle/High School | Bethel | Maine | United States |
| Terry Sanford High School | Fayetteville | North Carolina | United States |
| Test ATSU | Mesa | Arizona | United States |
| Thayer Academy | Braintree | Massachusetts | United States |
| The Bear Creek School | Redmond | Washington | United States |
| The Branson School | Ross | California | United States |
| The Calhoun School | New York | New York | United States |
| The Cambridge School of Weston | Weston | Massachusetts | United States |
| The Center Foundation - Summit High School | Bend | Oregon | United States |
| The Chapin School | New York | New York | United States |
| The Christian Academy | Brookhaven | Pennsylvania | United States |
| The Classical Academy | Colorado Springs | Colorado | United States |
| The College of St. Scholastica | Duluth | Minnesota | United States |
| The Delsea Regional School District | Franklinville | New Jersey | United States |
| The Derryfield School | Manchester | New Hampshire | United States |
| The Emery/Weiner School | Houston | Texas | United States |
| The Frederick Gunn School | WASHINGTON | Connecticut | United States |
| The Gymnastics Center | Cincinnati | Ohio | United States |
| The Hill School | Pottstown | Pennsylvania | United States |
| The Hun School of Princeton | Princeton | New Jersey | United States |
| The John Carroll School | Bel Air | Maryland | United States |
| The Kinkaid School | Houston | Texas | United States |
| The Lawrenceville School | Lawrenceville | New Jersey | United States |
| The Nightingale-Bamford School | New York | New York | United States |
| The Overlake School | Redmond | Washington | United States |
| the Providence Country Day School | East Providence | Rhode Island | United States |