| Saeteurn,
Dabbe - Seattle, WA |
| Saito,
Saki - Zushi, JAPAN |
| Salazar,
Aaron - Kent, WA |
| Salinas,
Perla - Bothell, WA |
| Salman,
Catherine - Seattle, WA |
| Sams,
Logan - Seattle, WA |
| Sanchez,
Mia - Corpus Christi, TX |
| Sandberg,
Henry - Spokane, WA |
| Sandoval,
Alexia - Wenatchee, WA |
| Sapier,
Alison - Anacortes, WA |
| Sargsian,
Liia - Everett, WA |
| Saunders,
Cameron - Blaine, WA |
| Savellano,
Besy Ann - Renton, WA |
| Saxon,
Mikel - Kirkland, WA |
| Scalera,
Isabella - Tacoma, WA |
| Schau,
Anika - Normandy Park, WA |
| Schinkel,
Maia - Seattle, WA |
| Schoenerstedt,
Nikias - Tribuswinkel, AUSTRIA |
| Schoennauer,
Landry - San Jose, CA |
| Schoepflin,
Jade - Lynnwood, WA |
| Scholz,
Gideon - Stanwood, WA |
| Schumacher,
Matigan - Bremerton, WA |
| Schumer,
Malia - Seattle, WA |
| Schwartz,
Ethan - Medical Lake, WA |
| Sebastian,
Nicole - Honolulu, HI |
| Seefeldt,
Chloe - Salem, OR |
| Seki,
Jacqueline - Honolulu, HI |
| Sergeeva,
Elizaveta - Black Diamond, WA |
| Sergeyeva,
Ekaterina - Black Diamond, WA |
| Sessions,
Ella - Spokane, WA |
| Setala,
Anna - Lynnwood, WA |
| Sevilla,
Allison Aeris - Tukwila, WA |
| Seyoum,
Gideon - Lynnwood, WA |
| Shaw,
Keira - Kent, WA |
| Sheikh,
Hanna - Seattle, WA |
| Sheirbon,
Benjamin - Wilsonville, OR |
| Sheridan,
Shannon - Seattle, WA |
| Shimabayashi,
Midori - Toyama, JAPAN |
| Shriner,
Lukas - Bellevue, WA |
| Sia,
Jasmine - Lake Tapps, WA |
| Sica,
Caleb - Covington, WA |
| Sieber,
Sean - Seattle, WA |
| Silva,
Malia Ana - Cathlamet, WA |
| Singh,
Gurpreet - Hoshiarpur, INDIA |
| Smith,
Breanna - Ellensburg, WA |
| Smith,
Destiny - Grand Prairie, TX |
| Smith,
Ella - Silverdale, WA |
| Smith,
Hannah - Eagle, ID |
| Snedeker,
Lauren - Washougal, WA |
| Soto,
Christopher - Mount Vernon, WA |
| Soto Serna,
Melissa - Federal Way, WA |
| Speakman,
Lily - Denver, CO |
| Spickelmier,
Matthew - Plymouth, MN |
| Stargell,
Anna-Celeste - Maple Falls, WA |
| Stark,
Madalynn - Centralia, WA |
| Starke,
Katherine - San Jose, CA |
| Stevenson,
Matthew - Renton, WA |
| Sueyoshi,
Mia - Kaneohe, HI |
| Sumile,
Drew - Kailua, HI |
| Suzuki,
Ai - Palo Alto, CA |
| Sweeney,
Jane - Zeeland, MI |