| Sabari,
Harper - Poulsbo, WA |
| Sadlier,
Emry - Seattle, WA |
| Saito,
Konoka - Nagoya, JAPAN |
| Saito,
Saki - Zushi, JAPAN |
| Salazar,
Aaron - Kent, WA |
| Salvador,
Leannah Loisse - Des Moines, WA |
| Sams,
Logan - Seattle, WA |
| Samuel,
Amarachi - Surrey, BC |
| Sanchez,
Emmanuel - Yakima, WA |
| Sanchez,
Mia - Corpus Christi, TX |
| Sandate,
Brienna - Port Orchard, WA |
| Sapier,
Alison - Anacortes, WA |
| Sapkota,
Arjun - Chitwan, NEPAL |
| Saunders,
Cameron - Blaine, WA |
| Saxon,
Mikel - Kirkland, WA |
| Scalera,
Isabella - Tacoma, WA |
| Schaefer,
Luciana - Spokane, WA |
| Schoenerstedt,
Nikias - Tribuswinkel, AUSTRIA |
| Schoepflin,
Jade - Lynnwood, WA |
| Scholz,
Gideon - Stanwood, WA |
| Schumer,
Malia - Seattle, WA |
| Schwartz,
Ethan - Medical Lake, WA |
| Senderson,
Jadlyn - Vancouver, WA |
| Senderson,
Layla - Vancouver, WA |
| Sessions,
Ella - Spokane, WA |
| Sevilla,
Allison Aeris - Tukwila, WA |
| Shapoval,
Marcella - Seattle, WA |
| Shaw,
Keira - Kent, WA |
| Sheridan,
Shannon - Seattle, WA |
| Shimabayashi,
Midori - Toyama, JAPAN |
| Shoemaker,
Elle - Olympia, WA |
| Shriner,
Lukas - Bellevue, WA |
| Sigheartau,
Andrea - Redmond, WA |
| Silva,
Malia Ana - Cathlamet, WA |
| Skinner,
Bailey - Anchorage, AK |
| Smith,
Destiny - Grand Prairie, TX |
| Snow,
Lwin Lwin - Yangon, MYANMAR |
| Somers,
Aubrey - Snohomish, WA |
| Soto Serna,
Melissa - Federal Way, WA |
| Spencer,
Emmerson - Bellevue, WA |
| Stamatis,
Sophia - Phoenix, AZ |
| Stargell,
Anna-Celeste - Maple Falls, WA |
| Stead,
Clara - El Dorado Hills, CA |
| Stevenson,
Matthew - Renton, WA |
| Stringer,
Kaela - Portland, OR |
| Sueyoshi,
Mia - Kaneohe, HI |
| Sutherland,
Aengus - Lake Oswego, OR |
| Swartout,
Owen - Sherwood, OR |