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Oldest Private Schools in Colorado

The average private school in Colorado was founded around 1980 (2026-27).

The oldest private school in Colorado is St. Mary's Academy and University Of Denver High School, each founded in 1864.

Quick Facts (26-27)

# CO Schools Ranked: 338
Top 20 Range (Year Founded): 1864–1907
CO School Avg.: 1980
National School Avg.: 1968

Quick Facts (26-27)

# CO Schools Ranked: 338
Top 20 Range (Year Founded): 1864–1907
CO School Avg.: 1980
National School Avg.: 1968

Frequently Asked Questions

What is the Colorado average private schools founding year?

The Colorado average private schools founding year is 1980 for 2026-27.

What are the private schools with oldest founding year in Colorado?

The top ranked private schools in Colorado include St. Mary's Academy, University Of Denver High School and Regis Jesuit High School.

What is private high school and private elementary school with the oldest founding year in Colorado?

The private high school with the oldest founding year in Colorado is St. Mary's Academy, with a year of 1864. The private elementary school with the oldest founding year is St. Mary's Academy, with a year of 1864.

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