#1 Private Schools with the Smallest Classes in Yellowstone County, MT
Sunrise Montessori School
Montessori school · Grades Pre-K–6
4 students per teacher
Billings, MT
AOverall grade51 students4 students per teacher
2026 lists
Private Schools with the Smallest Classes in Yellowstone County, MT
Private schools in Yellowstone County, MT with the fewest students per teacher (not counting preschools and special education schools). Top 8 of 8 schools.
#2 Private Schools with the Smallest Classes in Yellowstone County, MT
Billings Central Catholic High School
Diocesan school · Grades 3–12
4.9 students per teacher
Billings, MT
A+Overall grade344 students5 students per teacher
#3 Private Schools with the Smallest Classes in Yellowstone County, MT
Billings Christian School
Christian school (nondenominational) · Grades Pre-K–12
7.9 students per teacher
Billings, MT
A+Overall grade443 students8 students per teacher
#4 Private Schools with the Smallest Classes in Yellowstone County, MT
Grace Montessori Academy
Christian (nondenominational) · Montessori · Grades Pre-K–8
8.6 students per teacher
Billings, MT
BOverall grade91 students9 students per teacher
#5 Private Schools with the Smallest Classes in Yellowstone County, MT
St. Francis Catholic School
Diocesan school · Grades K–8
13.1 students per teacher
Billings, MT
B-Overall grade603 students13 students per teacher
#6 Private Schools with the Smallest Classes in Yellowstone County, MT
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
20.9 students per teacher
Billings, MT
B-Overall grade219 students21 students per teacher
#7 Private Schools with the Smallest Classes in Yellowstone County, MT
New Day School
Alternative school · Grades 6–12
21 students per teacher
Billings, MT
B+Overall grade42 students21 students per teacher
#8 Private Schools with the Smallest Classes in Yellowstone County, MT
New Day
Independent school · Grades 5–12
28.5 students per teacher
Billings, MT
B+Overall grade57 students29 students per teacher
From official public records, updated October 2026.