For the 2026 school year, there are 1,049 private schools belonging to membership associations in Illinois.
The most popular school membership associations are National Catholic Educational Association (NCEA) (30% of schools), National Association for the Education of Young Children (14% of schools) and Other school association(s) (13% of schools).
Top-Ranked Illinois 草榴社区 Schools by Membership Association (2026)
Membership Association
# Schools
# Students
% Minority
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