Oldest South Dakota Private High Schools By Founding Date (2026-27)

Freeman Academy Top 3 · Lowest Acceptance Rate (SD)

Sunshine Bible Academy Top 3 · Highest % Faculty w/ Adv. Degrees (SD)

Sioux Falls Christian Schools Top 4 · Highest % Faculty w/ Adv. Degrees (SD)

Home > South Dakota > Average Founding Date

Oldest Private High Schools in South Dakota

The average private high school in South Dakota was founded around 1970 (2026-27).

The oldest private high school in South Dakota is Red Cloud Indian School, founded in 1888.

Quick Facts (2026-27)

# SD Schools Ranked: 22
Top 20 Range (Year Founded): 1888–2009
SD School Avg.: 1969
National School Avg.: 1967

Quick Facts (2026-27)

# SD Schools Ranked: 22
Top 20 Range (Year Founded): 1888–2009
SD School Avg.: 1969
National School Avg.: 1967

Frequently Asked Questions

What is the South Dakota average private high schools founding year?

The South Dakota average private high schools founding year is 1970 for 2026-27.

What are the private high schools with oldest founding year in South Dakota?

The top ranked private high schools in South Dakota include Red Cloud Indian School, Freeman Academy and St. Mary Catholic School.

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