#1 Largest Private Schools in Franklin County, MO
St. Francis Borgia High School
Diocesan school · Grades 9–12
452 students
Washington, MO
B-Overall grade452 students16 students per teacher
2026 lists
Largest Private Schools in Franklin County, MO
The private schools in Franklin County, MO with the most students. Top 9 of 9 schools.
#2 Largest Private Schools in Franklin County, MO
Our Lady of Lourdes Catholic School
Parish school · Grades Pre-K–8
363 students
Washington, MO
B-Overall grade363 students15 students per teacher
#3 Largest Private Schools in Franklin County, MO
Immaculate Conception School
Diocesan school · Grades Pre-K–8
183 students
Union, MO
BOverall grade183 students13 students per teacher
#4 Largest Private Schools in Franklin County, MO
St. Gertude Catholic School
Parish school · Grades Pre-K–8
173 students
Washington, MO
B-Overall grade173 students13 students per teacher
#5 Largest Private Schools in Franklin County, MO
Immanuel Lutheran
Lutheran (Missouri Synod) school · Grades Pre-K–8
149 students
Washington, MO
BOverall grade149 students13 students per teacher
#6 Largest Private Schools in Franklin County, MO
Crosspoint Christian School
Christian school (nondenominational) · Grades Pre-K–12
121 students
Villa Ridge, MO
A-Overall grade121 students9 students per teacher
#7 Largest Private Schools in Franklin County, MO
St. Bridget Elementary School
Parish school · Grades Pre-K–8
116 students
Pacific, MO
A-Overall grade116 students10 students per teacher
#8 Largest Private Schools in Franklin County, MO
St. John the Baptist School
Parish school · Grades Pre-K–8
92 students
Villa Ridge, MO
A+Overall grade92 students8 students per teacher
#9 Largest Private Schools in Franklin County, MO
St. Anthony Catholic School
Diocesan school · Grades Pre-K–8
46 students
Sullivan, MO
AOverall grade46 students7 students per teacher
From official public records, updated October 2026.