For the 2026 school year, there are 151 private schools belonging to membership associations in Oklahoma.
The most popular school membership associations are Association of Christian Schools International (ACSI) (23% of schools), Other school association(s) (22% of schools) and National Catholic Educational Association (NCEA) (20% of schools).
Top-Ranked Oklahoma Private Schools by Membership Association (2026)
Membership Association
# Schools
# Students
% Minority
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