The average private school endowment in Oklahoma is $88M (2026).
The private school in Oklahoma with the highest endowment is Christian Heritage Academy, with a endowment of $500M.
Endowment Range: $2M
$500M
Avg. Endowment: $88M
Average Private School endowment in Oklahoma (2026)
School
Endowment
Grades
Location
Rank: #11.
Endowment: $500 M
Grades: PK-12
4400 SE 27th STREET
Oklahoma City, OK 73115
(405) 672-1787
Oklahoma City, OK 73115
(405) 672-1787
Rank: #22.
Holland Hall![Holland Hall Photo - More space to learn and grow. Here our Primary School students make some campfire S'Mores during an outdoor unit. S'More?! How can I have more when I haven't had any?! *Bonus points for knowing the quote*]( "Holland Hall Photo - More space to learn and grow. Here our Primary School students make some campfire S'Mores during an outdoor unit. S'More?! How can I have more when I haven't had any?! *Bonus points for knowing the quote*")
(Episcopal)
Endowment: $109 M
Grades: NS-12
5666 E 81st
Tulsa, OK 74137
(918) 481-1111
Tulsa, OK 74137
(918) 481-1111
Rank: #33.
Okc Heartland Montessori School - Future Educ. Llc![Okc Heartland Montessori School - Future Educ. Llc Photo - The Montessori method teaches independence and doing for oneself.]( "Okc Heartland Montessori School - Future Educ. Llc Photo - The Montessori method teaches independence and doing for oneself.")
Montessori School
Endowment: $50 M
Grades: PK-K
6120 N. Drexel Blvd.
Oklahoma City, OK 73112
(405) 463-5523
Oklahoma City, OK 73112
(405) 463-5523
Rank: #44.
Endowment: $25 M
Grades: 9-12
3905 S Hudson Avenue
Tulsa, OK 74135
(918) 609-7153
Tulsa, OK 74135
(918) 609-7153
Rank: #55.
Endowment: $10 M
Grades: PK-8
2206 S Lewis Ave
Tulsa, OK 74114
(918) 742-3364
Tulsa, OK 74114
(918) 742-3364
Rank: #66.
Mount Saint Mary Catholic High School
(Catholic)
Endowment: $6 M
Grades: 9-12
2801 S Shartel Ave
Oklahoma City, OK 73109
(405) 631-8865
Oklahoma City, OK 73109
(405) 631-8865
Rank: #77.
Endowment: $2 M
Grades: PK-12
6363 S. Trenton Avenue
Tulsa, OK 74136
(918) 745-9868
Tulsa, OK 74136
(918) 745-9868
Rank: #88.
Endowment: $2.5 M
Grades: NS-5
2021 E 71st St
Tulsa, OK 74136
(918) 494-0953
Tulsa, OK 74136
(918) 494-0953
Frequently Asked Questions
What is the Oklahoma average private schools endowment?
The Oklahoma average private schools endowment is $88M for 2026.
What are the private schools with the highest endowment in Oklahoma?
The top-ranked private schools in Oklahoma include Christian Heritage Academy, Holland Hall and Okc Heartland Montessori School - Future Educ. Llc.
What is private high school and private elementary school with the highest endowment in Oklahoma?
The private high school with the highest endowment in Oklahoma is Christian Heritage Academy, with a value of $500.0M. The private elementary school with the highest endowment is Christian Heritage Academy, with a value of $500.0M.
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