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For the 2025-26 school year, there are 5 private high schools belonging to State or regional independent school association serving 3,099 students in Oklahoma. You can also find more schools membership associations in Oklahoma.

The top ranked private high schools belonging to State or regional independent school association in Oklahoma include Heritage Hall, Bishop Kelley High School, Inc., and Lincoln Christian School.

80% of private high schools belonging to State or regional independent school association in Oklahoma are religiously affiliated (most commonly Christian and Catholic).