School Directory
| School/Organization | City | State | Country |
|---|---|---|---|
| Sachse High School | Sachse | Texas | United States |
| Sage Hill School | Newport Coast | California | United States |
| Saint Louis Priory School | St. Louis | Missouri | United States |
| Saint Pius X High School | Albuquerque | New Mexico | United States |
| Salem Hills High School | Salem | Utah | United States |
| Salem State University | Salem | Massachusetts | United States |
| Salesian College Preparatory | Richmond | California | United States |
| Salesian College Preparatory | Richmond | California | United States |
| Saline High School | Saline | Michigan | United States |
| Salisbury University/MSAT | SALISBURY | Maryland | United States |
| Salve Regina University | Newport | Rhode Island | United States |
| Sam Rayburn High School | Pasadena | Texas | United States |
| Samaritan Athletic Medicine | Corvallis | Oregon | United States |
| Sample HS | Anytown | South Carolina | United States |
| Samuel Clemens High School | Schertz | Texas | United States |
| San Benito High School | Hollister | California | United States |
| San Dimas High School | San Dimas | California | United States |
| San Luis Obispo High School | San Luis Obispo | California | United States |
| Sanderson High School | Raleigh | North Carolina | United States |
| Sandia High School | Albuquerque | New Mexico | United States |
| Sandra Day O'Connor | Phoenix | Arizona | United States |
| Santa Fe Indian School | Santa Fe | New Mexico | United States |
| Santa Rosa Academy | Menifee | California | United States |
| Santa Ynez High School | Santa Ynez | California | United States |
| Saucon Valley School District | Hellertown | Pennsylvania | United States |
| Saugatuck High School | Saugatuck | Michigan | United States |
| Saugatuck Middle/High School | Saugatuck | Michigan | United States |
| Sayre School | Lexington | Kentucky | United States |
| School of the Holy Child | Rye | New York | United States |
| School Without Walls Senior High School/ District of Columbia Public Schools | Washington | District of Columbia | United States |
| Schuyler Central High School | Schuyler | Nebraska | United States |
| Scott County High School | GEORGETOWN | Kentucky | United States |
| Seattle Preparatory School | Seattle | Washington | United States |
| Seattle University | Seattle | Washington | United States |
| 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 Pudong | Pudong Xinqu | Shanghai Shi | China |
| 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 |
| Silas High School | Tacoma | Washington | 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 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. 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 |