#1 Largest Private Schools in Jefferson County, KY
Trinity High School
Independent Catholic school · Grades 9–12
1,260 students
Louisville, KY
BOverall gradeAll boys1,260 students12 students per teacher
2026 lists
Largest Private Schools in Jefferson County, KY
The private schools in Jefferson County, KY with the most students. Top 50 of 63 schools.
#2 Largest Private Schools in Jefferson County, KY
St. Xavier High School
Independent Catholic school · Grades 9–12
1,081 students
Louisville, KY
A+Overall gradeAll boys1,081 students10 students per teacher
#3 Largest Private Schools in Jefferson County, KY
Assumption High School
Independent Catholic school · Grades 9–12
902 students
Louisville, KY
B+Overall gradeAll girls902 students12 students per teacher
#4 Largest Private Schools in Jefferson County, KY
Kentucky Country Day School
Independent school · Grades Pre-K–12
801 students
Louisville, KY
AOverall grade801 students10 students per teacher
#5 Largest Private Schools in Jefferson County, KY
Louisville Collegiate School
Independent school · Grades Pre-K–12
767 students
Louisville, KY
B+Overall grade767 students8 students per teacher
#6 Largest Private Schools in Jefferson County, KY
Highlands Latin School
Christian school (nondenominational) · Grades Pre-K–12
694 students
Louisville, KY
A+Overall grade694 students9 students per teacher
#7 Largest Private Schools in Jefferson County, KY
St. Margaret Mary School
Parish school · Grades K–8
661 students
Louisville, KY
B-Overall grade661 students16 students per teacher
#8 Largest Private Schools in Jefferson County, KY
St. Albert the Great School
Diocesan school · Grades Pre-K–8
640 students
Louisville, KY
B-Overall grade640 students19 students per teacher
#9 Largest Private Schools in Jefferson County, KY
St. Patrick School
Diocesan school · Grades Pre-K–8
617 students
Louisville, KY
B-Overall grade617 students17 students per teacher
#10 Largest Private Schools in Jefferson County, KY
St. Michael School
Parish school · Grades Pre-K–8
592 students
Louisville, KY
B-Overall grade592 students20 students per teacher
#11 Largest Private Schools in Jefferson County, KY
Whitefield Academy
Baptist school · Grades Pre-K–12
556 students
Louisville, KY
BOverall grade556 students11 students per teacher
#12 Largest Private Schools in Jefferson County, KY
St. Gabriel School
Diocesan school · Grades Pre-K–8
524 students
Louisville, KY
BOverall grade524 students15 students per teacher
#13 Largest Private Schools in Jefferson County, KY
Mercy Academy
Independent Catholic school · Grades 9–12
508 students
Louisville, KY
A-Overall gradeAll girls508 students12 students per teacher
#14 Largest Private Schools in Jefferson County, KY
Portland Christian School
Church of Christ school · Grades Pre-K–12
508 students
Louisville, KY
BOverall grade508 students10 students per teacher
#15 Largest Private Schools in Jefferson County, KY
St. Agnes School
Parish school · Grades Pre-K–8
436 students
Louisville, KY
B-Overall grade436 students20 students per teacher
#16 Largest Private Schools in Jefferson County, KY
Notre Dame Academy
Diocesan school · Grades K–8
433 students
Louisville, KY
B+Overall grade433 students14 students per teacher
#17 Largest Private Schools in Jefferson County, KY
St. Francis School
Independent school · Grades Pre-K–12
433 students
Louisville, KY
BOverall grade433 students8 students per teacher
#18 Largest Private Schools in Jefferson County, KY
St. Mary Academy
Diocesan school · Grades Pre-K–8
428 students
Prospect, KY
B-Overall grade428 students17 students per teacher
#19 Largest Private Schools in Jefferson County, KY
Sacred Heart Model School
Independent Catholic school · Grades K–8
410 students
Louisville, KY
A-Overall grade410 students11 students per teacher
#20 Largest Private Schools in Jefferson County, KY
Holy Spirit School
Diocesan school · Grades Pre-K–8
387 students
Louisville, KY
B-Overall grade387 students17 students per teacher
#21 Largest Private Schools in Jefferson County, KY
Our Lady of Lourdes School
Diocesan school · Grades Pre-K–8
372 students
Louisville, KY
B+Overall grade372 students13 students per teacher
#22 Largest Private Schools in Jefferson County, KY
St. Raphael the Archangel Elementary School
Diocesan school · Grades Pre-K–8
357 students
Louisville, KY
BOverall grade357 students16 students per teacher
#23 Largest Private Schools in Jefferson County, KY
St. Bernard Catholic School
Diocesan school · Grades Pre-K–8
339 students
Louisville, KY
B+Overall grade339 students12 students per teacher
#24 Largest Private Schools in Jefferson County, KY
Academy for Individual Excellence
Church of Christ school · Grades K–12
327 students
Louisville, KY
BOverall grade327 students9 students per teacher
From official public records, updated October 2026.