#1 Largest Private Schools in Gallatin County, MT
Manhattan Christian School
Christian school (nondenominational) · Grades Pre-K–12
295 students
Manhattan, MT
B-Overall grade295 students11 students per teacher
2026 lists
Largest Private Schools in Gallatin County, MT
The private schools in Gallatin County, MT with the most students. Top 11 of 11 schools.
#2 Largest Private Schools in Gallatin County, MT
Headwaters Academy
Alternative school · Grades 6–8
84 students
Bozeman, MT
A-Overall grade84 students7 students per teacher
#3 Largest Private Schools in Gallatin County, MT
Middle Creek Montessori
Montessori school · Grades Pre-K–6
72 students
Bozeman, MT
AOverall grade72 students5 students per teacher
#4 Largest Private Schools in Gallatin County, MT
Mount Ellis Academy
Seventh-day Adventist school · Grades 9–12
68 students
Bozeman, MT
AOverall grade68 students8 students per teacher
#5 Largest Private Schools in Gallatin County, MT
Mt. Ellis Elementary
Seventh-day Adventist school · Grades Pre-K–8
65 students
Bozeman, MT
B+Overall grade65 students12 students per teacher
#6 Largest Private Schools in Gallatin County, MT
Divine Mercy Academy
Independent Catholic school · Grades Pre-K–12
55 students
Belgrade, MT
AOverall grade55 students6 students per teacher
#7 Largest Private Schools in Gallatin County, MT
Divine Mercy Academy
Independent Catholic school · Grades Pre-K–12
55 students
Belgrade, MT
B+Overall grade55 students7 students per teacher
#8 Largest Private Schools in Gallatin County, MT
Big Sky Discovery School
Independent school · Grades Pre-K–12
52 students
Big Sky, MT
A-Overall grade52 students4 students per teacher
#9 Largest Private Schools in Gallatin County, MT
Bozeman Summit Schoool
Montessori school · Grades Pre-K–5
52 students
Bozeman, MT
B+Overall grade52 students10 students per teacher
#10 Largest Private Schools in Gallatin County, MT
Bozeman Christian
Church of Christ school · Ungraded
29 students
Bozeman, MT
B+Overall grade29 students15 students per teacher
#11 Largest Private Schools in Gallatin County, MT
Cottonwood Day School
Special education school · Grades 1–10
28 students
Bozeman, MT
A-Overall grade28 students6 students per teacher
From official public records, updated October 2026.