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For the 2026 school year, there are 8 private high schools belonging to Christian Schools International (CSI) serving 3,917 students in Washington. You can also find more schools membership associations in Washington.

The top-ranked private high schools belonging to Christian Schools International (CSI) in Washington include Rainier Christian Middle and High School, Sunnyside Christian School, and Lynden Christian School.

The average acceptance rate is 82%, which is lower than the Washington private high school average acceptance rate of 83%.

100% of private high schools belonging to Christian Schools International (CSI) in Washington are religiously affiliated (most commonly Christian and Calvinist).