SeattleChange
Sanderson is known around the state for their Theater Troupe, Marching Band, and chorus department. In recent years all three have been recognized for being one of the best programs in the area.
The Sanderson marching band is known around the state for hosting the Capital Band Expo each year in October. This is where they invite schools from across the state and beyond to show off their skill in one of the few competitions of its kind. The marching band also competes in regional band competitions, winning two Grand Champion awards while competing in 2011 and 2014.