#1 Private Schools with the Smallest Classes in Jefferson County, WI
St. Joseph School
Diocesan school · Grades K–8
8.4 students per teacher
Fort Atkinson, WI
AOverall grade105 students8 students per teacher
2026 lists
Private Schools with the Smallest Classes in Jefferson County, WI
Private schools in Jefferson County, WI with the fewest students per teacher (not counting preschools and special education schools). Top 19 of 19 schools.
#2 Private Schools with the Smallest Classes in Jefferson County, WI
St. John the Baptist Catholic School
Parish school · Grades Pre-K–8
8.4 students per teacher
Jefferson, WI
A+Overall grade82 students8 students per teacher
#3 Private Schools with the Smallest Classes in Jefferson County, WI
Maranatha Baptist Academy
Baptist school · Grades 9–12
8.8 students per teacher
Watertown, WI
A-Overall grade65 students9 students per teacher
#4 Private Schools with the Smallest Classes in Jefferson County, WI
St. Henry Catholic School
Parish school · Grades 1–8
9.3 students per teacher
Watertown, WI
A+Overall grade102 students9 students per teacher
#5 Private Schools with the Smallest Classes in Jefferson County, WI
Luther Preparatory School
Lutheran (Wisconsin Synod) school · Grades 9–12
9.4 students per teacher
Watertown, WI
AOverall grade409 students9 students per teacher
#6 Private Schools with the Smallest Classes in Jefferson County, WI
Trinity-St. Lukes Lutheran Elementary School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
10 students per teacher
Watertown, WI
AOverall grade123 students10 students per teacher
#7 Private Schools with the Smallest Classes in Jefferson County, WI
St. John Evangelical Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
10.3 students per teacher
Waterloo, WI
AOverall grade72 students10 students per teacher
#8 Private Schools with the Smallest Classes in Jefferson County, WI
St. Pauls Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
10.6 students per teacher
Ixonia, WI
A-Overall grade52 students11 students per teacher
#9 Private Schools with the Smallest Classes in Jefferson County, WI
Calvary Baptist Christian School
Baptist school · Grades Pre-K–8
11.2 students per teacher
Watertown, WI
A+Overall grade152 students11 students per teacher
#10 Private Schools with the Smallest Classes in Jefferson County, WI
St. Peters Ev. Lutheran
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
11.5 students per teacher
Helenville, WI
B+Overall grade55 students12 students per teacher
#11 Private Schools with the Smallest Classes in Jefferson County, WI
Trinity St. Lukes Lutheran Middle School
Lutheran (Wisconsin Synod) school · Grades 3–8
12.6 students per teacher
Watertown, WI
B+Overall grade88 students13 students per teacher
#12 Private Schools with the Smallest Classes in Jefferson County, WI
St. John's Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
13.1 students per teacher
Watertown, WI
B+Overall grade143 students13 students per teacher
#13 Private Schools with the Smallest Classes in Jefferson County, WI
St. Paul's Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
13.1 students per teacher
Fort Atkinson, WI
A-Overall grade89 students13 students per teacher
#14 Private Schools with the Smallest Classes in Jefferson County, WI
St. Johns Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
14.1 students per teacher
Jefferson, WI
B+Overall grade76 students14 students per teacher
#15 Private Schools with the Smallest Classes in Jefferson County, WI
Crown of Life Christian Academy
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
14.2 students per teacher
Fort Atkinson, WI
B-Overall grade183 students14 students per teacher
#16 Private Schools with the Smallest Classes in Jefferson County, WI
Lakeside Lutheran High School
Lutheran (Wisconsin Synod) school · Grades 9–12
14.3 students per teacher
Lake Mills, WI
B-Overall grade535 students14 students per teacher
#17 Private Schools with the Smallest Classes in Jefferson County, WI
Good Shepherd Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
15 students per teacher
Watertown, WI
B+Overall grade135 students15 students per teacher
#18 Private Schools with the Smallest Classes in Jefferson County, WI
St. Marks Evangelical Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
15.9 students per teacher
Watertown, WI
BOverall grade191 students16 students per teacher
#19 Private Schools with the Smallest Classes in Jefferson County, WI
St. Paul Evangelical Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
16.9 students per teacher
Lake Mills, WI
B-Overall grade203 students17 students per teacher
From official public records, updated October 2026.