#1 Private Schools with the Smallest Classes in Montana
Big Sky Discovery School
Independent school · Grades Pre-K–12
3.6 students per teacher
Big Sky, MT
A-Overall grade52 students4 students per teacher
2026 lists
Private Schools with the Smallest Classes in Montana
Private schools in Montana with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 58 schools.
#2 Private Schools with the Smallest Classes in Montana
Sunrise Montessori School
Montessori school · Grades Pre-K–6
4 students per teacher
Billings, MT
AOverall grade51 students4 students per teacher
#3 Private Schools with the Smallest Classes in Montana
Middle Creek Montessori
Montessori school · Grades Pre-K–6
4.6 students per teacher
Bozeman, MT
AOverall grade72 students5 students per teacher
#4 Private Schools with the Smallest Classes in Montana
Billings Central Catholic High School
Diocesan school · Grades 3–12
4.9 students per teacher
Billings, MT
A+Overall grade344 students5 students per teacher
#5 Private Schools with the Smallest Classes in Montana
St. Labre Schools
Independent Catholic school · Grades Pre-K–12
5.1 students per teacher
Ashland, MT
BOverall grade422 students5 students per teacher
#6 Private Schools with the Smallest Classes in Montana
St. Labre Catholic Elementary School
Independent Catholic school · Grades Pre-K–4
5.5 students per teacher
Ashland, MT
A-Overall grade61 students6 students per teacher
#7 Private Schools with the Smallest Classes in Montana
Divine Mercy Academy
Independent Catholic school · Grades Pre-K–12
5.5 students per teacher
Belgrade, MT
AOverall grade55 students6 students per teacher
#8 Private Schools with the Smallest Classes in Montana
St. Labre High School
Diocesan school · Grades 9–12
6.2 students per teacher
Ashland, MT
A-Overall grade112 students6 students per teacher
#9 Private Schools with the Smallest Classes in Montana
St. Andrew School
Independent Catholic school · Grades Pre-K–12
6.3 students per teacher
Helena, MT
A+Overall grade193 students6 students per teacher
#10 Private Schools with the Smallest Classes in Montana
Pines Academy
Christian school (nondenominational) · Grades K–8
6.4 students per teacher
Pinesdale, MT
AOverall grade80 students6 students per teacher
#11 Private Schools with the Smallest Classes in Montana
Nkwusm Salish Language School
Independent school · Grades Pre-K–8
6.4 students per teacher
Arlee, MT
AOverall grade45 students6 students per teacher
#12 Private Schools with the Smallest Classes in Montana
Clearview Horizon INC / Clearview Girls Academy
Christian school (nondenominational) · Grades 7–12
6.6 students per teacher
Heron, MT
A-Overall gradeAll girls47 students7 students per teacher
#13 Private Schools with the Smallest Classes in Montana
Whitefish Christian Academy
Christian school (nondenominational) · Grades Pre-K–8
6.7 students per teacher
Whitefish, MT
AOverall grade116 students7 students per teacher
#14 Private Schools with the Smallest Classes in Montana
De La Salle Blackfeet School
Independent Catholic school · Grades 4–8
6.8 students per teacher
Browning, MT
AOverall grade60 students7 students per teacher
#15 Private Schools with the Smallest Classes in Montana
Divine Mercy Academy
Independent Catholic school · Grades Pre-K–12
6.9 students per teacher
Belgrade, MT
B+Overall grade55 students7 students per teacher
#16 Private Schools with the Smallest Classes in Montana
Aspire High School
Independent school · Grades K–12
7 students per teacher
Missoula, MT
B+Overall grade43 students7 students per teacher
#17 Private Schools with the Smallest Classes in Montana
Butte Central Catholic High School
Independent Catholic school · Grades 9–12
7.1 students per teacher
Butte, MT
A+Overall grade113 students7 students per teacher
#18 Private Schools with the Smallest Classes in Montana
St. Marys Catholic School
Parish school · Grades Pre-K–8
7.2 students per teacher
Livingston, MT
A+Overall grade101 students7 students per teacher
#19 Private Schools with the Smallest Classes in Montana
Headwaters Academy
Alternative school · Grades 6–8
7.4 students per teacher
Bozeman, MT
A-Overall grade84 students7 students per teacher
#20 Private Schools with the Smallest Classes in Montana
Mission Valley Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
7.5 students per teacher
Polson, MT
A+Overall grade138 students8 students per teacher
#21 Private Schools with the Smallest Classes in Montana
Sussex School
Independent school · Grades K–8
7.6 students per teacher
Missoula, MT
B+Overall grade125 students8 students per teacher
#22 Private Schools with the Smallest Classes in Montana
St. Charles Mission School
Independent Catholic school · Grades Pre-K–8
7.8 students per teacher
Pryor, MT
AOverall grade70 students8 students per teacher
#23 Private Schools with the Smallest Classes in Montana
Billings Christian School
Christian school (nondenominational) · Grades Pre-K–12
7.9 students per teacher
Billings, MT
A+Overall grade443 students8 students per teacher
#24 Private Schools with the Smallest Classes in Montana
Great Falls Central Catholic High School
Diocesan school · Grades 9–12
8.2 students per teacher
Great Falls, MT
A+Overall grade56 students8 students per teacher
From official public records, updated October 2026.