Washington Schools
- Seattle Chong Wa Benevolent Association
- Seattle Colleges
- Seattle Community College District
- Seattle Country Day School
- Seattle Film Institute
- Seattle Girls' School
- Seattle Hebrew Academy
- Seattle Japanese School
- Seattle Jewish Community School
- Seattle Lutheran High School
- Seattle Opportunities Industrialization Center
- Seattle Pacific University
- Seattle Pacific University College Of Arts And Sciences
- Seattle Piano Academy
- Seattle Preparatory School
- Seattle Public Schools
- Seattle University
- Seattle University College Of Arts And Sciences
- Seattle University School Of Law
- Seattle Vocational Institute
- Seattle Waldorf School
- Sedro Woolley High School
- Sedro Woolley School District
- Sehome High School
- Selah High School
- Sequoyah Middle School
- Shadle Park High School
- Shelton High School
- Shelton School District
- Shiloh Hills Elementary
- Shorecrest High School
- Shoreline Christian School
- Shoreline Community College
- Shoreline Public Schools
- Shorewood High School
- Skagit Valley College
- Skyline High School
- Skyview High School
- Skyview Junior High
- Snohomish High School
- Snohomish School District
- Snoqualmie Valley School District
- South Kitsap High School
- South Kitsap School District
- South Puget Sound Community College
- South Seattle College
- South Seattle College Georgetown Campus
- South Shore School
- South Whidbey School District
- Southridge High School
- Spanaway Junior High School
- Spanaway Lake High School
- Spectrum Community School
- Spokane Art Center
- Spokane College
- Spokane Community College
- Spokane Falls Community College
- Spokane Junior College
- Spokane Public Schools
- Spokane Valley High School
- Squalicum High School
- St Anne School
- St Edward Seminary
- St Elizabeth Ann Seton Catholic High School
- St John Endicott High School
- St Joseph School
- Stadium High School
- Stanwood High School
- Stanwood Camano School District
- Stehekin School
- Steilacoom High School
- Steilacoom Historical School District
- Sultan Senior High School
- Sumner School District
- Sunnyside Christian High School
- Sunnyside High School
- Suquamish Tribal Education Department
- Suzuki Institute Of Seattle
- Tacoma Community College
- Tacoma Housing Authority
- Tacoma Public Schools
- Tacoma School Of The Arts
- Tahoma School District
- Tahoma Senior High School
- Terrace Park Elementary School
- Tesla Stem High School
- The Art Institute Of Seattle
- The Bear Creek School
- The Bush School
- The Center School
- The Clearwater School
- The Evergreen School
- The Nova Project
- The Overlake School
- The Seattle School Of Theology & Psychology
- The Soundview School
- Thefilmschool
- Thomas Jefferson High School
- Thorp Grade School
- Thorp School District