In WA there are 6 classifications based on enrollment, from 4A - 1A, then 1B and 2B for very small schools. Each classification has it's own champion.
The state is divided into 9 geographic districts. After the regular season there are district tournaments (some districts play in combined tournaments to keep the number of teams about the same across tournaments). The top 8 teams in each classification (based on their finish in the district tournaments) move on to the state tournament.