Best Oklahoma Private High Schools Belonging to National Association of Independent Schools (NAIS) (2026)
For the 2026 school year, there are 4 private high schools belonging to National Association of Independent Schools (NAIS) serving 3,045 students in Oklahoma. You can also find more schools membership associations in Oklahoma.
The top-ranked private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma include Casady School, Mission Academy, and Holland Hall.
50% of private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma are religiously affiliated (most commonly Episcopal).
Learn how private schools assess leadership, grit, resilience, and character, and why these soft skills are becoming increasingly important in admissions.
