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For the 2025-26 school year, there are 2 private high schools belonging to Christian Schools International (CSI) serving 449 students in Oklahoma. You can also find more schools membership associations in Oklahoma.

The top ranked private high schools belonging to Christian Schools International (CSI) in Oklahoma include Goodland Academy and Southwest Covenant Schools.

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