#1 Fastest-Growing Private Schools in Montgomery County, OH
Germantown Christian School
Pentecostal school · Grades K–12
Enrollment up 220% in about a decade
Germantown, OH
B+Overall grade205 students9 students per teacher
2026 lists
Fastest-Growing Private Schools in Montgomery County, OH
Private schools in Montgomery County, OH whose enrollment has grown the most over the past decade. Top 7 of 7 schools.
#2 Fastest-Growing Private Schools in Montgomery County, OH
Spring Valley Academy
Seventh-day Adventist school · Grades Pre-K–12
Enrollment up 80% in about a decade
Centerville, OH
BOverall grade519 students16 students per teacher
#3 Fastest-Growing Private Schools in Montgomery County, OH
St. Helen School
Diocesan school · Grades Pre-K–8
Enrollment up 19% in about a decade
Dayton, OH
B+Overall grade380 students17 students per teacher
#4 Fastest-Growing Private Schools in Montgomery County, OH
Temple Christian School
Baptist school · Grades Pre-K–12
Enrollment up 19% in about a decade
Dayton, OH
A+Overall grade121 students8 students per teacher
#5 Fastest-Growing Private Schools in Montgomery County, OH
Montessori School of Dayton
Montessori school · Grades Pre-K–8
Enrollment up 16% in about a decade
Kettering, OH
BOverall grade119 students9 students per teacher
#6 Fastest-Growing Private Schools in Montgomery County, OH
Chaminade Julienne High School
Diocesan school · Grades 9–12
Enrollment up 13% in about a decade
Dayton, OH
A+Overall grade702 students12 students per teacher
#7 Fastest-Growing Private Schools in Montgomery County, OH
St. Charles Borromeo School
Parish school · Grades Pre-K–8
Enrollment up 12% in about a decade
Kettering, OH
BOverall grade476 students17 students per teacher
From official public records, updated October 2026.