#1 Most Diverse Private Schools in Watertown, WI
St. Henry Catholic School
Parish school · Grades 1–8
Largest group: 57% of students
Watertown, WI
A+Overall grade102 students9 students per teacher
2026 lists
Most Diverse Private Schools in Watertown, WI
Private schools in Watertown, WI with the most varied mix of students. Top 9 of 9 schools.
#2 Most Diverse Private Schools in Watertown, WI
St. Marks Evangelical Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Largest group: 72% of students
Watertown, WI
BOverall grade191 students16 students per teacher
#3 Most Diverse Private Schools in Watertown, WI
Good Shepherd Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Largest group: 77% of students
Watertown, WI
B+Overall grade135 students15 students per teacher
#4 Most Diverse Private Schools in Watertown, WI
Calvary Baptist Christian School
Baptist school · Grades Pre-K–8
Largest group: 81% of students
Watertown, WI
A+Overall grade152 students11 students per teacher
#5 Most Diverse Private Schools in Watertown, WI
Luther Preparatory School
Lutheran (Wisconsin Synod) school · Grades 9–12
Largest group: 85% of students
Watertown, WI
AOverall grade409 students9 students per teacher
#6 Most Diverse Private Schools in Watertown, WI
St. John's Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Largest group: 90% of students
Watertown, WI
B+Overall grade143 students13 students per teacher
#7 Most Diverse Private Schools in Watertown, WI
Maranatha Baptist Academy
Baptist school · Grades 9–12
Largest group: 91% of students
Watertown, WI
A-Overall grade65 students9 students per teacher
#8 Most Diverse Private Schools in Watertown, WI
Trinity St. Lukes Lutheran Middle School
Lutheran (Wisconsin Synod) school · Grades 3–8
Largest group: 95% of students
Watertown, WI
B+Overall grade88 students13 students per teacher
#9 Most Diverse Private Schools in Watertown, WI
Trinity-St. Lukes Lutheran Elementary School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Largest group: 96% of students
Watertown, WI
AOverall grade123 students10 students per teacher
From official public records, updated October 2026.