Best Washington Private High Schools Belonging to Other school association(s) (2025-26)

For the 2025-26 school year, there are 31 private high schools belonging to Other school association(s) serving 10,138 students in Washington. You can also find more schools membership associations in Washington.

The top ranked private high schools belonging to Other school association(s) in Washington include Bellarmine Preparatory School, Cascade Christian Junior High/High School, and The Overlake School.

The average tuition cost is $20,766, which is higher than the Washington private high school average tuition cost of $17,531.

55% of private high schools belonging to Other school association(s) in Washington are religiously affiliated (most commonly Christian and Catholic).