Freeman Academy Top 3 · Lowest Acceptance Rate (SD)

St. Mary Elementary Top 8 · Lowest Tuition (SD)

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

Home > Find Schools > School Rankings > Average Founding Date > South Dakota

Oldest Private Schools in South Dakota

The average private school in South Dakota was founded around 1971 (2026-27).

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

Quick Facts (26-27)

# SD Schools Ranked: 51
Top 20 Range (Year Founded): 1888–1960
SD School Avg.: 1971
National School Avg.: 1967

Quick Facts (26-27)

# SD Schools Ranked: 51
Top 20 Range (Year Founded): 1888–1960
SD School Avg.: 1971
National School Avg.: 1967

Frequently Asked Questions

What is the South Dakota average private schools founding year?

The South Dakota average private schools founding year is 1971 for 2026-27.

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

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

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

The private high school with the oldest founding year in South Dakota is Red Cloud Indian School, with a year of 1888. The private elementary school with the oldest founding year is Red Cloud Indian School, with a year of 1888.

Recent Articles

November 03, 2026

Can Private Schools Raise Fees After You Sign?

Can private schools increase mandatory fees after enrollment contracts are signed? Learn how contract terms, fee disclosures, state laws, and parent rights affect unexpected charges and available options.

November 03, 2026

Financial Aid When a Sibling Graduates Private School

Learn how private school financial aid may change when an older sibling graduates, including revised family contributions, sibling discounts, college expenses, renewal decisions, and practical steps to protect affordability.

November 03, 2026

Private School Expansion: Preserving School Culture

Discover how growing private schools can expand enrollment while preserving small classes, personal attention, strong relationships, and school culture, plus essential questions parents should ask before choosing a school.