Shawe Memorial Junior Senior High School Top 23 · Largest Endowment (IN)

Eman Schools Top 3 · Lowest Acceptance Rate (IN)

International School Of Indiana Top 4 · Highest Avg. SAT Score (IN)

Home > Indiana > Average Founding Date

Oldest Private High Schools in Indiana

The average private high school in Indiana was founded around 1973 (2026).

The oldest private high school in Indiana is Oldenburg Academy, founded in 1852.

Quick Facts (2026)

# IN Schools Ranked: 119
Top 20 Range (Year Founded): 1852–1951
IN School Avg.: 1972
National School Avg.: 1967

Quick Facts (2026)

# IN Schools Ranked: 119
Top 20 Range (Year Founded): 1852–1951
IN School Avg.: 1972
National School Avg.: 1967

Frequently Asked Questions

What is the Indiana average private high schools founding year?

The Indiana average private high schools founding year is 1973 for 2026.

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

The top ranked private high schools in Indiana include Oldenburg Academy, Washington Catholic Middle High School and Union Bible Academy.

Recent Articles

August 25, 2026

Will This Curriculum Still Matter in 2035?

Learn how to evaluate future-ready private school curricula for 2035, focusing on durable knowledge, critical thinking, AI literacy, adaptability, communication, creativity, and real-world learning before choosing a school.

August 25, 2026

Private Schools for Creators, Trades & Startups

Explore how private schools support non-traditional career paths in creative industries, skilled trades, and entrepreneurship, plus what families should evaluate when choosing specialized programs for future-ready students today.

August 25, 2026

First 90 Days at Private School: Parent Guide

Learn how to read your child’s first 90 days at private school, distinguish healthy adjustment from genuine struggles, and know when academic, social, or emotional concerns require action.