For the 2026 school year, there are 4 private high schools belonging to National Association of Independent Schools (NAIS) serving 1,521 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, Sun Valley Community School, and Genesis Preparatory Academy.
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).
Top-Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Idaho (2026)
School
Location
Quick Facts
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Boise, ID 83716
(208) 424-5000
Gr: PK-12 | 355 students Avg. class size: 15 students Sports: 10 | Extracurrculars: 21 Tuition & acceptance rate listed
1866 N Cecil Rd Bldg 2
Post Falls, ID 83854
(208) 691-0712
Post Falls, ID 83854
(208) 691-0712
Gr: PK-12 | 501 students
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
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.]( "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
Boise, ID 83702
(208) 331-9260
Gr: PK-9 | 158 students Avg. class size: 13 students Tuition & acceptance rate listed
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