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 Belonging to National Association of Independent Schools (NAIS) (2025-26)

For the 2025-26 school year, there are 5 private schools belonging to National Association of Independent Schools (NAIS) serving 1,595 students in Idaho. You can also find more schools membership associations in Idaho.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Idaho include Riverstone International School, Sun Valley Community School, and Genesis Preparatory Academy.
The average acceptance rate is 72%, which is lower than the Idaho private school average acceptance rate of 87%.
20% of private schools belonging to National Association of Independent Schools (NAIS) in Idaho are religiously affiliated (most commonly Christian).

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in Idaho (2025-26)

School
Location
Quick Facts
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Gr: PK-12 | 416 students Avg. class size: 15 students Sports: 10 | Extracurrculars: 21 Tuition & acceptance rate listed
Genesis Preparatory Academy
(Christian)
(1)
1866 N Cecil Rd Bldg 2
Post Falls, ID 83854
(208) 691-0712
Gr: PK-12 | 501 students
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
Gr: PK-12 | 446 students Avg. class size: 15 students Sports: 21 | Extracurrculars: 11 Tuition & acceptance rate listed
Foothills School of Arts & Sciences
Foothills School of Arts & Sciences Photo - Foothills students become capable and confident learners during their time at Foothills! Foothills allows students to share their voice, empowers them to become critical thinkers and open-minded listeners, and promotes a positive school culture where everyone is valued.
Special Program Emphasis
601 South 9th Street
Boise, ID 83702
(208) 331-9260
Gr: PK-9 | 158 students Avg. class size: 13 students Tuition & acceptance rate listed
1480 S 500 W
Driggs, ID 83422
(208) 354-7898
Gr: PK-8 | 74 students Avg. class size: 13 students Sports: 1 Tuition listed

Recent Articles

Student Success Predictors at Community Colleges
Student Success Predictors at Community Colleges
A practical guide to student success predictors at community colleges for private school advisors helping graduates navigate two-year pathways.
Career Pathways with Community College for Private School Grads
Career Pathways with Community College for Private School Grads
Explore top career pathways with community college for private school graduates, including high-demand jobs, transfer options, and 2025 workforce trends.
Navigating the FAFSA & Financial Aid Timeline for Community College
Navigating the FAFSA & Financial Aid Timeline for Community College
Learn how to navigate FAFSA and financial aid timelines when starting at community college — from application to disbursement in 2025.