The average private preschool in Idaho was founded around 1981 (2026-27).
The oldest private preschool in Idaho is St. Mary's Parish School, Greenleaf Friends Academy, and St. Mary's Catholic School, each founded in 1908.
Quick Facts (26-27)
- # ID Schools Ranked: 59
- Top 20 Range (Year Founded): 1908–1979
- ID School Avg.: 1980
- National School Avg.: 1971















