School Directory
| School/Organization | City | State | Country |
|---|---|---|---|
| Seton Hall University | south orange | New Jersey | United States |
| Sewickley Academy | Sewickley | Pennsylvania | United States |
| Shadle Park High School | Spokane | Washington | United States |
| Shady Side Academy | Pittsburgh | Pennsylvania | United States |
| Shaler Area School District | Pittsburgh | Pennsylvania | United States |
| Shanghai American School, Puxi | Minhang Qu | Shanghai Shi | China |
| Shenendehowa High School | Clifton Park | New York | United States |
| Shepherd High School | Shepherd | Texas | United States |
| Sherrard High School | Sherrard | Illinois | United States |
| Sherrard Jr./ SR. High School | Sherrard | Illinois | United States |
| Shore Regional High School | West Long Branch | New Jersey | United States |
| Shroder High School | Cincinnati | Ohio | United States |
| Sierra Vista High School | Baldwin Park | California | United States |
| Simi Valley High School | Simi Valley | California | United States |
| Sky View High School | Smithfield | Utah | United States |
| Skyline High School | Sammamish | Washington | United States |
| Smyrna High School | Smyrna | Tennessee | United States |
| Solanco High School | Quarryville | Pennsylvania | United States |
| Somerset Academy Charter School | Pembroke Pines | Florida | United States |
| Somerville High School | Somerville | Massachusetts | United States |
| South Burlington High School | South Burlington | Vermont | United States |
| South Caldwell High School | Hudson | North Carolina | United States |
| South Central High School | Union Mills | Indiana | United States |
| South Dakota SchooI of Mines & Technology | Rapid City | South Dakota | United States |
| South Kent School | South Kent | Connecticut | 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 |
| 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 | Barrington | Rhode Island | 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. 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's School | Covington | Louisiana | 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 |
| 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 |
| Stevens Point Area Senior High | Stevens Point | Wisconsin | United States |
| Stillman Valley High School | Stillman Valley | Illinois | United States |
| Stratford High SChool | Goose Creek | South Carolina | United States |
| Sugar Valley Regional Charter School / UPMC | Loganton, | Pennsylvania | 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 Christian Academy | Brookhaven | Pennsylvania | 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 |