Private School Review - Established 2003
Sun Valley Community School Top 3 · Lowest Acceptance Rate (ID)
Foothills School of Arts & Sciences Top 8 · Lowest Acceptance Rate (ID)
Riverstone International School Top 3 · Most AP Courses (ID)

Best Idaho Private High Schools Belonging to National Association of Independent Schools (NAIS) (2026-27)

For the 2026-27 school year, there are 4 private high schools belonging to National Association of Independent Schools (NAIS) serving 1,437 students in Idaho. You can also find more schools membership associations in Idaho.
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Idaho include Riverstone International School, Genesis Preparatory Academy, and Sun Valley Community School.
The average acceptance rate is 72%, which is lower than the Idaho private high school average acceptance rate of 85%.
25% of private high schools belonging to National Association of Independent Schools (NAIS) in Idaho are religiously affiliated (most commonly Christian).

Quick Facts (2026-27)

  • # Private Schools: 4

Quick Facts (2026-27)

  • # Private Schools: 4

Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Idaho (2026-27)

Map of Genesis Preparatory Academy
Genesis Preparatory Academy
Gr: PK-12 | 501 students
Christian
1866 N Cecil Rd Bldg 2
Post Falls, ID 83854
(208) 691-0712
(1)
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Riverstone International School Photo
Riverstone International School
Gr: PK-12 | 355 students
Avg. class size: 15 students
Sports: 11 | Extracurriculars: 21
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
(11)
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Sun Valley Community School Photo
Sun Valley Community School
Gr: PK-12 | 423 students
Avg. class size: 15 students
Sports: 22 | Extracurriculars: 11
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
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Foothills School of Arts & Sciences Photo
Foothills School of Arts & Sciences
Gr: PK-9 | 158 students
Avg. class size: 13 students
Specialized Curriculum
601 South 9th Street
Boise, ID 83702
(208) 331-9260
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Frequently Asked Questions

What are the top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Idaho?
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Idaho include Riverstone International School, Genesis Preparatory Academy, and Sun Valley Community School.
How many private high schools belonging to National Association of Independent Schools (NAIS) are located in Idaho?
4 private high schools belonging to National Association of Independent Schools (NAIS) are located in Idaho.
What percentage of private high schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Idaho?
25% of private high schools belonging to National Association of Independent Schools (NAIS) in Idaho are religiously affiliated (most commonly Christian).
4
Private Schools
1,437
Students
$28,397
Avg. Tuition
10%
Students of Color
7:1
Student-Teacher Ratio

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