The average private high school tuition in Colorado is $17,461 per year (2026-27).
The private high school with the lowest tuition is Castle Rock Classical Academy and Crossroads School, each with a tuition of $1,500.
Quick Facts (26-27)
- # CO Schools Ranked: 62
- Top 20 Range (Tuition): $1,500–$8,600
- CO School Avg.: $19,130
- National School Avg.: $13,519























