#1 Private Schools with the Smallest Classes in Rock County, WI
Oakhill Christian School
Christian school (nondenominational) · Grades K–12
6.5 students per teacher
Janesville, WI
B+Overall grade84 students7 students per teacher
2026 lists
Private Schools with the Smallest Classes in Rock County, WI
Private schools in Rock County, WI with the fewest students per teacher (not counting preschools and special education schools). Top 7 of 7 schools.
#2 Private Schools with the Smallest Classes in Rock County, WI
Rock Prairie Montessori
Montessori school · Grades Pre-K–8
7.7 students per teacher
Janesville, WI
B+Overall grade87 students8 students per teacher
#3 Private Schools with the Smallest Classes in Rock County, WI
Our Lady of the Assumption School
Parish school · Grades Pre-K–8
9 students per teacher
Beloit, WI
A+Overall grade112 students9 students per teacher
#4 Private Schools with the Smallest Classes in Rock County, WI
St. Matthews Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
10.2 students per teacher
Janesville, WI
AOverall grade55 students10 students per teacher
#5 Private Schools with the Smallest Classes in Rock County, WI
Rock County Christian School
Christian school (nondenominational) · Grades K–12
13.3 students per teacher
Beloit, WI
B-Overall grade240 students13 students per teacher
#6 Private Schools with the Smallest Classes in Rock County, WI
St. Pauls Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
13.4 students per teacher
Janesville, WI
BOverall grade171 students13 students per teacher
#7 Private Schools with the Smallest Classes in Rock County, WI
St. William Catholic School
Parish school · Grades Pre-K–8
13.4 students per teacher
Janesville, WI
BOverall grade167 students13 students per teacher
From official public records, updated October 2026.