For the 2026 school year, there are 16 private schools belonging to Other school association(s) serving 1,819 students in Idaho. You can also find more schools membership associations in Idaho.
The top-ranked private schools belonging to Other school association(s) in Idaho include Acton Academy Twin Falls, Holy Rosary Catholic School, and Gem State Adventist Academy.
The average acceptance rate is 68%, which is lower than the Idaho private school average acceptance rate of 87%.
56% of private schools belonging to Other school association(s) in Idaho are religiously affiliated (most commonly Christian and Seventh Day Adventist).
Top-Ranked Private 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
925 N Cloverdale Road
Boise, ID 83713
(208) 376-7141
Boise, ID 83713
(208) 376-7141
Gr: PK-8 | 100 students Avg. class size: 20 students Sports: 3 | Extracurrculars: 2 Tuition 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
Holy Rosary Catholic School![Holy Rosary Catholic School Photo - It's a GREAT day at Holy Rosary!]( "Holy Rosary Catholic School Photo - It's a GREAT day at Holy Rosary!")
(Catholic)
161 9th St
Idaho Falls, ID 83404
(208) 522-7781
Idaho Falls, ID 83404
(208) 522-7781
Gr: PK-6 | 175 students Avg. class size: 20 students Extracurrculars: 7 Tuition listed
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
2620 W State St
Boise, ID 83702
(208) 342-7476
Boise, ID 83702
(208) 342-7476
Gr: PK-8 | 180 students Avg. class size: 15 students Sports: 6 Tuition 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
Hope Christian Academy
Special Education School (Christian)
7696 Old Bruneau Hwy
Marsing, ID 83639
(208) 896-4673
Marsing, ID 83639
(208) 896-4673
Gr: K-6 | 14 students
Montessori Academy On Parkcenter
Montessori School
649 E Parkcenter Blvd
Boise, ID 83706
(208) 344-0004
Boise, ID 83706
(208) 344-0004
Gr: PK-K | 136 students Tuition listed
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
Pend Oreille Valley Adventist School
(Seventh Day Adventist)
33820 Highway 41
Oldtown, ID 83822
(208) 437-2638
Oldtown, ID 83822
(208) 437-2638
Gr: 1-8 | 23 students Tuition listed
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
Recent Articles
Financial Aid 101 for Private School Families 2026
Guide to private school financial aid in 2026, with current costs, key planning timelines and practical steps parents need to maximize aid options.
Why Extracurricular Activities Matter in 2026
Discover why extracurricular activities remain essential in 2026, with updated research, costs, and admissions insights for parents and students.
How to Appeal for Financial Aid After Admission
Learn how to appeal for financial aid after admission to a private school, with expert steps, timelines, and 2026 updates for families.
