Riverstone International School Photo - Riverstone International School is the premier, IB day/boarding school in Boise for Preschool-Gr 12 students. The school's 14 acre campus is nestled between the Boise River and the Greenbelt in Southeast Boise.

Best Idaho Private Schools (2025-26)

For the 2025-26 school year, there are 167 private schools serving 21,975 students in Idaho (there are 808 public schools, serving 315,693 students). 7% of all K-12 students in Idaho attend private schools (compared to the national average of 10%).
The average private school tuition is $11,418 for elementary schools and $11,681 for high schools (view national tuition averages).
The top-ranked private schools in Idaho include Riverstone International School, Cole Valley Christian High School, and The Ambrose School.
The average acceptance rate is 87% (view national acceptance rates). Minority enrollment is 15% and the student-teacher ratio is 13:1.
62% of schools are religiously affiliated, with most being Christian or Catholic.

Top Ranked Idaho Private Schools by County (2025-26)

County
# Schools
# Students
% of K-12 Students in Private Schools
47
8,234
9%
15
2,383
5%
23
3,634
14%

Frequently Asked Questions

What are the top ranked private schools in Idaho?
The top-ranked private schools in Idaho include Riverstone International School, Cole Valley Christian High School, and The Ambrose School.
How many private schools are located in Idaho?
There are 167 private schools are located in Idaho.
How much do private schools cost in Idaho?
The average private school tuition in Idaho is $11,418 for elementary schools and $11,681 for high schools
How diverse are private schools in Idaho?
Approximately 15% of students in Idaho private schools are minority students (compared to the national percentage).
What percentage of students in Idaho go to private school?
7% of all K-12 students in Idaho attend private schools (compared to the national average of 10%).
What percentage of private schools are religiously affiliated in Idaho?
62% of private schools in Idaho are religiously affiliated, with most being Christian or Catholic.
Which private schools in Idaho are often viewed compared to one another?

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