For the 2026 school year, there are 10 private high schools belonging to Association of Christian Schools International (ACSI) serving 2,295 students in Montana. You can also find more schools membership associations in Montana.
The top-ranked private high schools belonging to Association of Christian Schools International (ACSI) in Montana include Foothills Community Christian High School, Heritage Christian School, and Stillwater Christian School.
The average acceptance rate is 90%, which is lower than the Montana private high school average acceptance rate of 91%.
100% of private high schools belonging to Association of Christian Schools International (ACSI) in Montana are religiously affiliated (most commonly Christian and Assembly of God).
Top-Ranked Private High Schools Belonging to Association of Christian Schools International (ACSI) in Montana (2026)
School
Location
Quick Facts
4519 Grand Ave
Billings, MT 59106
(406) 656-9484
Billings, MT 59106
(406) 656-9484
Gr: PK-12 | 400 students Avg. class size: 18 students Sports: 5 | Extracurrculars: 8 Tuition & acceptance rate listed
Foothills Community Christian High School
(Christian)
2210 5th Ave North
Great Falls, MT 59401
(406) 452-5276
Great Falls, MT 59401
(406) 452-5276
Gr: PK-12 | 201 students Avg. class size: 9 students Sports: 7 | Extracurrculars: 17 Tuition & acceptance rate listed
3384 Canyon Ferry Road
East Helena, MT 59635
(406) 442-3821
East Helena, MT 59635
(406) 442-3821
Gr: PK-12 | 249 students Avg. class size: 16 students Sports: 5 Tuition listed
4310 Durston Road
Bozeman, MT 59718
(406) 587-9311
Bozeman, MT 59718
(406) 587-9311
Gr: PK-12 | 252 students Avg. class size: 17 students Sports: 5 | Extracurrculars: 5 Tuition listed
Stillwater Christian School![Stillwater Christian School Photo - SCS Campus - High School and Middle School Building]( "Stillwater Christian School Photo - SCS Campus - High School and Middle School Building")
(Christian)
255 FFA Dr
Kalispell, MT 59901
(406) 752-4400
Kalispell, MT 59901
(406) 752-4400
Gr: PK-12 | 460 students Avg. class size: 20 students Sports: 6 | Extracurrculars: 4 Tuition listed
2526 Sunset Lane
Missoula, MT 59804
(406) 549-0482
Missoula, MT 59804
(406) 549-0482
Gr: PK-12 | 357 students Avg. class size: 15 students Sports: 5 | Extracurrculars: 7 Tuition & acceptance rate listed
Hamilton Christian Academy
(Assembly of God)
601 W Main St
Hamilton, MT 59840
(406) 363-4534
Hamilton, MT 59840
(406) 363-4534
Gr: K-12 | 89 students Avg. class size: 15 students Tuition & acceptance rate listed
Kootenai Valley Christian School
(Christian)
1024 Montana Ave
Libby, MT 59923
(406) 293-2303
Libby, MT 59923
(406) 293-2303
Gr: PK-12 | 107 students Avg. class size: 13 students Tuition & acceptance rate listed
Lustre Christian High School![Lustre Christian High School Photo - Choir performing at the annual Christmas Program.]( "Lustre Christian High School Photo - Choir performing at the annual Christmas Program.")
(Mennonite)
294 Lustre Rd
Frazer, MT 59225
(406) 392-5735
Frazer, MT 59225
(406) 392-5735
Gr: 9-12 | 32 students Avg. class size: 15 students
38907 WWJD Lane
Polson, MT 59860
(406) 883-0706
Polson, MT 59860
(406) 883-0706
Gr: PK-12 | 148 students Avg. class size: 12 students Sports: 4 Tuition & acceptance rate listed
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.
