The average private high school endowment in Oklahoma is $0M (2026-27).
The private high school in Oklahoma with the highest endowment is Holland Hall, with a endowment of $109M.
Quick Facts (26-27)
- # OK Schools Ranked: 4
- Top 20 Range (Endowment): $2M–$109M
- OK School Avg.: $35M
- National School Avg.: $30M



