#1 Largest Private Schools in Missoula County, MT
Valley Christian School
Christian school (nondenominational) · Grades Pre-K–12
326 students
Missoula, MT
BOverall grade326 students11 students per teacher
2026 lists
Largest Private Schools in Missoula County, MT
The private schools in Missoula County, MT with the most students. Top 10 of 10 schools.
#2 Largest Private Schools in Missoula County, MT
St. Joseph School
Diocesan school · Grades Pre-K–8
283 students
Missoula, MT
B+Overall grade283 students12 students per teacher
#3 Largest Private Schools in Missoula County, MT
Missoula International School
Independent school · Grades Pre-K–8
150 students
Missoula, MT
B+Overall grade150 students9 students per teacher
#4 Largest Private Schools in Missoula County, MT
Loyola Sacred Heart High School
Diocesan school · Grades 9–12
143 students
Missoula, MT
A+Overall grade143 students9 students per teacher
#5 Largest Private Schools in Missoula County, MT
Brightways Global Academy
Alternative school · Grades Pre-K–12
134 students
Missoula, MT
B-Overall grade134 students
#6 Largest Private Schools in Missoula County, MT
Sussex School
Independent school · Grades K–8
125 students
Missoula, MT
B+Overall grade125 students8 students per teacher
#7 Largest Private Schools in Missoula County, MT
Aspire High School
Independent school · Grades K–12
43 students
Missoula, MT
B+Overall grade43 students7 students per teacher
#8 Largest Private Schools in Missoula County, MT
Aspire School
Independent school · Grades 6–12
28 students
Missoula, MT
AOverall grade28 students4 students per teacher
#9 Largest Private Schools in Missoula County, MT
North West Indian Bible School
Methodist school · Grades 1–12
26 students
Alberton, MT
AOverall grade26 students6 students per teacher
#10 Largest Private Schools in Missoula County, MT
Missoula Christian Montessori
Greek Orthodox · Montessori · Grades Pre-K–6
24 students
Missoula, MT
A-Overall grade24 students4 students per teacher
From official public records, updated October 2026.