Private School Review - Established 2003
Casady School Top 3 · Lowest Acceptance Rate (OK)
Heritage Hall Top 6 · Most AP Courses (OK)
Holland Hall Top 3 · Highest Avg. SAT Score (OK)

Oklahoma Private High Schools Belonging to National Association of Independent Schools (NAIS)

For the 2026-27 school year, there are 4 private high schools belonging to National Association of Independent Schools (NAIS) serving 3,045 students in Oklahoma.
The average acceptance rate is 69%, which is lower than the Oklahoma private high school average acceptance rate of 83%.
50% of private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma are religiously affiliated (most commonly Episcopal).
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma include Holland Hall, Mission Academy, and Heritage Hall.

Quick Facts (26-27)

  • # Private Schools: 4

Quick Facts (26-27)

  • # Private Schools: 4

Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Oklahoma (2026-27)

Casady School Photo
Casady School
Gr: PK-12 | 1,049 students
Avg. class size: 13 students
Sports: 15 | Extracurriculars: 9
Episcopal
9500 N Pennsylvania Ave
Oklahoma City, OK 73120
(405) 749-3200
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Heritage Hall Photo
Heritage Hall
Gr: PK-12 | 955 students
Avg. class size: 13 students
Sports: 13 | Extracurriculars: 12
1800 NW 122nd Street
Oklahoma City, OK 73120
(405) 936-3009
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Holland Hall Photo
Holland Hall
Gr: NS-12 | 1,032 students
Avg. class size: 18 students
Sports: 16 | Extracurriculars: 22
Episcopal
5666 E 81st
Tulsa, OK 74137
(918) 481-1111
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Map of Mission Academy
Mission Academy
Gr: 9-12 | 9 students
Avg. class size: 10 students
7101 N. Classen
Oklahoma City, OK 73116
(405) 843-9100
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Frequently Asked Questions

What are the top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma?
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma include Holland Hall, Mission Academy, and Heritage Hall.
How many private high schools belonging to National Association of Independent Schools (NAIS) are located in Oklahoma?
4 private high schools belonging to National Association of Independent Schools (NAIS) are located in Oklahoma.
What percentage of private high schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Oklahoma?
50% of private high schools belonging to National Association of Independent Schools (NAIS) in Oklahoma are religiously affiliated (most commonly Episcopal).
4
Private Schools
3,045
Students
$18,810
Avg. Tuition
24%
Students of Color
8:1
Student-Teacher Ratio

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