For the 2026 school year, there are 168 private schools serving 21,897 students in Idaho (there are 808 public schools, serving 315,693 students). 6% of all K-12 students in Idaho attend private schools (compared to the national average of 10%).
The average private school tuition is $11,018 for elementary schools and $10,817 for high schools (view national tuition averages).
The top-ranked private schools in Idaho include Greenleaf Friends Academy, Bishop Kelly High School, and Riverstone International School.
The average acceptance rate is 87% (view national acceptance rates). Minority enrollment is 15% and the student-teacher ratio is 13:1.
Overview
This State (ID)
US
# Schools
168 Schools
Student Body:
# Students
21,897 Students
5,705,486 Students
% Average Students of Color
15%
34%
Student By Grade
Academics and Faculty:
# Teachers
1,686 Teachers
508,223 Teachers
Average Student-Teacher Ratio
13:1
11:1
% Average Faculty w/Advanced Degree
57%
55%
Average Class Size
15 students
15 students
Average Number of AP Courses
10 courses
13 courses
Average SAT score
1243
(Out of 1600)
1233
Average ACT score
27
(Out of 36)
26
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$10,950
$14,876
Average Summer Program Cost
$13,665
$1,139
Average % on Financial Aid
19%
35%
Average Financial Aid Grant
$3,626
$7,125
Average Acceptance Rate
87%
82%
Average Endowment Size
$45.83 million
$61.7 million
Students by Ethnicity:
Diversity Score
0.55
0.65
# American Indian Students
92 Students
29,893 Students
% American Indian Students
n/a
1%
# Asian Students
462 Students
265,103 Students
% Asian Students
2%
5%
# Hispanic Students
1,063 Students
507,446 Students
% Hispanic Students
5%
9%
# Black Students
385 Students
416,735 Students
% Black Students
2%
7%
# White Students
12,996 Students
2,933,948 Students
% White Students
60%
52%
# Hawaiian Students
50 Students
22,226 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
6,649 Students
1,474,278 Students
% of Others Students
31%
26%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Extracurriculars
7 extracurriculars
9 extracurriculars
Average Number of Sports
6 sports
7 sports
Top-Ranked Idaho Private Schools by County (2026)
Popular neighborhoods: Boise Bench (8 schools), West Boise (7 schools), North End (4 schools), Southeast Boise (3 schools), Downtown (2 schools).
County
# Schools
# Students
% of K-12 Students in Private Schools
Frequently Asked Questions
What are the top-ranked private schools in Idaho?
The top-ranked private schools in Idaho include Greenleaf Friends Academy, Bishop Kelly High School, and Riverstone International School.
How many private schools are located in Idaho?
There are 168 private schools are located in Idaho.
How much do private schools cost in Idaho?
The average private school tuition in Idaho is $11,018 for elementary schools and $10,817 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?
6% 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?
Which private schools in Idaho are often viewed compared to one another?
Popular comparisons of private schools in Idaho include: Grace Lutheran School vs. Holy Spirit Catholic School, Holy Spirit Catholic School vs. Grace Lutheran School, Alacca Christian Academy vs. Sandpoint Christian School
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