#1 Most Diverse Private Schools in Montana
Billings Christian School
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 37% of students
Billings, MT
A+Overall grade443 students8 students per teacher
2026 lists
Most Diverse Private Schools in Montana
Private schools in Montana with the most varied mix of students. Top 50 of 53 schools.
#2 Most Diverse Private Schools in Montana
Fairfield Mennonite School
Mennonite school · Grades Pre-K–10
Largest group: 50% of students
Fairfield, MT
B+Overall grade74 students15 students per teacher
#3 Most Diverse Private Schools in Montana
Brightways Global Academy
Alternative school · Grades Pre-K–12
Largest group: 57% of students
Missoula, MT
B-Overall grade134 students
#4 Most Diverse Private Schools in Montana
Treasure State Academy
Baptist school · Grades Pre-K–12
Largest group: 65% of students
Great Falls, MT
AOverall grade54 students11 students per teacher
#5 Most Diverse Private Schools in Montana
Yellowstone Academy
Special education school · Grades 6–12
Largest group: 68% of students
Billings, MT
AOverall grade75 students5 students per teacher
#6 Most Diverse Private Schools in Montana
Mount Ellis Academy
Seventh-day Adventist school · Grades 9–12
Largest group: 68% of students
Bozeman, MT
AOverall grade68 students8 students per teacher
#7 Most Diverse Private Schools in Montana
Mission Valley Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 69% of students
Polson, MT
A+Overall grade138 students8 students per teacher
#8 Most Diverse Private Schools in Montana
Sunrise Montessori School
Montessori school · Grades Pre-K–6
Largest group: 69% of students
Billings, MT
AOverall grade51 students4 students per teacher
#9 Most Diverse Private Schools in Montana
Missoula International School
Independent school · Grades Pre-K–8
Largest group: 75% of students
Missoula, MT
B+Overall grade150 students9 students per teacher
#10 Most Diverse Private Schools in Montana
Mt. Ellis Elementary
Seventh-day Adventist school · Grades Pre-K–8
Largest group: 75% of students
Bozeman, MT
B+Overall grade65 students12 students per teacher
#11 Most Diverse Private Schools in Montana
St. Jude Thaddeus School
Parish school · Grades Pre-K–8
Largest group: 77% of students
Havre, MT
B+Overall grade113 students11 students per teacher
#12 Most Diverse Private Schools in Montana
New Day
Independent school · Grades 5–12
Largest group: 77% of students
Billings, MT
B+Overall grade57 students29 students per teacher
#13 Most Diverse Private Schools in Montana
Hamilton Christian Academy
Assembly of God school · Grades K–12
Largest group: 78% of students
Hamilton, MT
BOverall grade87 students13 students per teacher
#14 Most Diverse Private Schools in Montana
St. Joseph School
Diocesan school · Grades Pre-K–8
Largest group: 79% of students
Missoula, MT
B+Overall grade283 students12 students per teacher
#15 Most Diverse Private Schools in Montana
Great Falls Central Catholic High School
Diocesan school · Grades 9–12
Largest group: 79% of students
Great Falls, MT
A+Overall grade56 students8 students per teacher
#16 Most Diverse Private Schools in Montana
Bozeman Summit Schoool
Montessori school · Grades Pre-K–5
Largest group: 83% of students
Bozeman, MT
B+Overall grade52 students10 students per teacher
#17 Most Diverse Private Schools in Montana
St. Marys Catholic School
Parish school · Grades Pre-K–8
Largest group: 85% of students
Livingston, MT
A+Overall grade101 students7 students per teacher
#18 Most Diverse Private Schools in Montana
Grace Montessori Academy
Christian (nondenominational) · Montessori · Grades Pre-K–8
Largest group: 85% of students
Billings, MT
BOverall grade91 students9 students per teacher
#19 Most Diverse Private Schools in Montana
Middle Creek Montessori
Montessori school · Grades Pre-K–6
Largest group: 85% of students
Bozeman, MT
AOverall grade72 students5 students per teacher
#20 Most Diverse Private Schools in Montana
Valley Christian School
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 86% of students
Missoula, MT
BOverall grade326 students11 students per teacher
#21 Most Diverse Private Schools in Montana
Billings Central Catholic High School
Diocesan school · Grades 3–12
Largest group: 87% of students
Billings, MT
A+Overall grade344 students5 students per teacher
#22 Most Diverse Private Schools in Montana
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Largest group: 87% of students
Billings, MT
B-Overall grade219 students21 students per teacher
#23 Most Diverse Private Schools in Montana
Sussex School
Independent school · Grades K–8
Largest group: 87% of students
Missoula, MT
B+Overall grade125 students8 students per teacher
#24 Most Diverse Private Schools in Montana
Divine Mercy Academy
Independent Catholic school · Grades Pre-K–12
Largest group: 87% of students
Belgrade, MT
AOverall grade55 students6 students per teacher
From official public records, updated October 2026.