#1 Fastest-Growing Private Schools in St. Charles County, MO
Child of God Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 96% in about a decade
Saint Peters, MO
BOverall grade139 students13 students per teacher
2026 lists
Fastest-Growing Private Schools in St. Charles County, MO
Private schools in St. Charles County, MO whose enrollment has grown the most over the past decade. Top 7 of 7 schools.
#2 Fastest-Growing Private Schools in St. Charles County, MO
St. Dominic High School
Diocesan school · Grades 9–12
Enrollment up 63% in about a decade
O'Fallon, MO
B-Overall grade1,087 students17 students per teacher
#3 Fastest-Growing Private Schools in St. Charles County, MO
Lutheran High School of St. Charles County
Lutheran (Missouri Synod) school · Grades 9–12
Enrollment up 56% in about a decade
Saint Peters, MO
BOverall grade460 students15 students per teacher
#4 Fastest-Growing Private Schools in St. Charles County, MO
Zion Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 30% in about a decade
Saint Charles, MO
B-Overall grade364 students18 students per teacher
#5 Fastest-Growing Private Schools in St. Charles County, MO
St. Paul Elementary School
Parish school · Grades Pre-K–8
Enrollment up 24% in about a decade
Saint Paul, MO
B-Overall grade222 students19 students per teacher
#6 Fastest-Growing Private Schools in St. Charles County, MO
St. Theodore School
Parish school · Grades Pre-K–8
Enrollment up 23% in about a decade
Wentzville, MO
B-Overall grade260 students16 students per teacher
#7 Fastest-Growing Private Schools in St. Charles County, MO
Seton Regional Catholic School
Parish school · Grades Pre-K–8
Enrollment up 16% in about a decade
Saint Charles, MO
BOverall grade248 students16 students per teacher
From official public records, updated October 2026.