#1 Fastest-Growing Private Schools in Watertown, WI
St. John's Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 72% in about a decade
Watertown, WI
B+Overall grade143 students13 students per teacher
2026 lists
Fastest-Growing Private Schools in Watertown, WI
Private schools in Watertown, WI whose enrollment has grown the most over the past decade. Top 5 of 5 schools.
#2 Fastest-Growing Private Schools in Watertown, WI
Calvary Baptist Christian School
Baptist school · Grades Pre-K–8
Enrollment up 43% in about a decade
Watertown, WI
A+Overall grade152 students11 students per teacher
#3 Fastest-Growing Private Schools in Watertown, WI
Good Shepherd Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 35% in about a decade
Watertown, WI
B+Overall grade135 students15 students per teacher
#4 Fastest-Growing Private Schools in Watertown, WI
Trinity-St. Lukes Lutheran Elementary School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 29% in about a decade
Watertown, WI
AOverall grade123 students10 students per teacher
#5 Fastest-Growing Private Schools in Watertown, WI
Trinity St. Lukes Lutheran Middle School
Lutheran (Wisconsin Synod) school · Grades 3–8
Enrollment up 10% in about a decade
Watertown, WI
B+Overall grade88 students13 students per teacher
From official public records, updated October 2026.