For the 2026 school year, there are 10 private high schools belonging to Other school association(s) serving 1,191 students in Idaho. You can also find more schools membership associations in Idaho.
The top-ranked private high schools belonging to Other school association(s) in Idaho include Sun Valley Community School, Lighthouse Christian School, and Northwest Childrens Home Education Center.
The average acceptance rate is 68%, which is lower than the Idaho private high school average acceptance rate of 85%.
40% of private high schools belonging to Other school association(s) in Idaho are religiously affiliated (most commonly Christian and Seventh Day Adventist).
Top-Ranked Private High Schools Belonging to Other school association(s) in Idaho (2026)
School
Location
Quick Facts
Acton Academy Twin Falls ![Acton Academy Twin Falls Photo]( "Acton Academy Twin Falls Photo")
Montessori School
1830 Addison Ave E
Twin Falls, ID 83301
(208) 420-9520
Twin Falls, ID 83301
(208) 420-9520
Gr: NS-10 | 36 students Avg. class size: 15 students Sports: 1 Tuition & acceptance rate listed
Gem State Adventist Academy
(Seventh Day Adventist)
16115 S Montana Ave
Caldwell, ID 83607
(208) 459-1627
Caldwell, ID 83607
(208) 459-1627
Gr: 9-12 | 60 students Avg. class size: 15 students
Lighthouse Christian School
(Christian)
960 Eastland Dr
Twin Falls, ID 83301
(208) 737-1425
Twin Falls, ID 83301
(208) 737-1425
Gr: PK-12 | 391 students Avg. class size: 20 students Sports: 8 Tuition listed
Northwest Childrens Home Education Center
Special Education School
602 13th St
Lewiston, ID 83501
(208) 746-8206
Lewiston, ID 83501
(208) 746-8206
Gr: 1-12 | 55 students Acceptance rate listed
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
1723 S. Horton St
Caldwell, ID 83605
(208) 546-0832
Caldwell, ID 83605
(208) 546-0832
Gr: 7-12 | 29 students Sports: 3 Tuition listed
Calvary Christian School ![Calvary Christian School Photo - Coach giving direction]( "Calvary Christian School Photo - Coach giving direction")
(Christian)
1210 N Middleton Rd
Nampa, ID 83651
(208) 467-9114
Nampa, ID 83651
(208) 467-9114
Gr: K-11 | 81 students Avg. class size: 15 students Sports: 3 Tuition listed
Northwest Academy
Alternative School
139 Success Ln
Naples, ID 83847
(208) 267-7522
Naples, ID 83847
(208) 267-7522
Gr: 12 | 40 students
Northwest Children's Home
Special Education School
419 22nd Ave
Lewiston, ID 83501
(208) 746-8206
Lewiston, ID 83501
(208) 746-8206
Gr: 3-12 | 53 students
Wisdom Ranch Vocational Gap Year
All-boys | Alternative School
4331 Champagne Creek Rd
Arco, ID 83213
(208) 527-8933
Arco, ID 83213
(208) 527-8933
Gr: 10-12 Avg. class size: 4 students
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