#1 Largest Private Schools in Indianapolis, IN
Heritage Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,476 students
Indianapolis, IN
A-Overall grade1,476 students12 students per teacher
2026 lists
Largest Private Schools in Indianapolis, IN
The private schools in Indianapolis, IN with the most students. Top 50 of 74 schools.
#2 Largest Private Schools in Indianapolis, IN
Cathedral High School
Parish school · Grades Pre-K–12
1,171 students
Indianapolis, IN
A+Overall grade1,171 students13 students per teacher
#3 Largest Private Schools in Indianapolis, IN
Roncalli High School
Diocesan school · Grades 9–12
1,082 students
Indianapolis, IN
BOverall grade1,082 students14 students per teacher
#4 Largest Private Schools in Indianapolis, IN
The Oaks Academy
Christian school (nondenominational) · Grades Pre-K–8
971 students
Indianapolis, IN
A+Overall grade971 students8 students per teacher
#5 Largest Private Schools in Indianapolis, IN
Park Tudor School
Alternative school · Grades Pre-K–12
956 students
Indianapolis, IN
B+Overall grade956 students10 students per teacher
#6 Largest Private Schools in Indianapolis, IN
Brebeuf Jesuit Preparatory School
Independent Catholic school · Grades 9–12
829 students
Indianapolis, IN
A+Overall grade829 students11 students per teacher
#7 Largest Private Schools in Indianapolis, IN
Suburban Christian School
Baptist school · Grades Pre-K–12
600 students
Indianapolis, IN
B-Overall grade600 students18 students per teacher
#8 Largest Private Schools in Indianapolis, IN
St. Simon the Apostle School
Diocesan school · Grades Pre-K–8
592 students
Indianapolis, IN
B+Overall grade592 students14 students per teacher
#9 Largest Private Schools in Indianapolis, IN
Cardinal Ritter High School
Diocesan school · Grades 7–12
585 students
Indianapolis, IN
B+Overall grade585 students14 students per teacher
#10 Largest Private Schools in Indianapolis, IN
St. Jude Catholic School
Diocesan school · Grades Pre-K–8
480 students
Indianapolis, IN
BOverall grade480 students17 students per teacher
#11 Largest Private Schools in Indianapolis, IN
St. Mark Catholic School
Diocesan school · Grades Pre-K–8
459 students
Indianapolis, IN
BOverall grade459 students19 students per teacher
#12 Largest Private Schools in Indianapolis, IN
Scecina Memorial High School
Diocesan school · Grades 9–12
454 students
Indianapolis, IN
A+Overall grade454 students12 students per teacher
#13 Largest Private Schools in Indianapolis, IN
St. Barnabas School
Parish school · Grades Pre-K–8
450 students
Indianapolis, IN
A+Overall grade450 students12 students per teacher
#14 Largest Private Schools in Indianapolis, IN
The Orchard School
Montessori school · Grades Pre-K–8
444 students
Indianapolis, IN
A+Overall grade444 students5 students per teacher
#15 Largest Private Schools in Indianapolis, IN
Indianapolis Christian School
Christian school (nondenominational) · Grades Pre-K–8
423 students
Indianapolis, IN
B+Overall grade423 students13 students per teacher
#16 Largest Private Schools in Indianapolis, IN
International School of Indiana
Independent school · Grades Pre-K–12
423 students
Indianapolis, IN
A+Overall grade423 students5 students per teacher
#17 Largest Private Schools in Indianapolis, IN
School of Knowledge
Islamic school · Grades Pre-K–12
422 students
Indianapolis, IN
A+Overall grade422 students10 students per teacher
#18 Largest Private Schools in Indianapolis, IN
Immaculate Heart of Mary Catholic School
Parish school · Grades K–8
410 students
Indianapolis, IN
B-Overall grade410 students18 students per teacher
#19 Largest Private Schools in Indianapolis, IN
Holy Cross Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
391 students
Indianapolis, IN
B-Overall grade391 students
#20 Largest Private Schools in Indianapolis, IN
Nativity Catholic School
Independent Catholic school · Grades Pre-K–8
385 students
Indianapolis, IN
BOverall grade385 students18 students per teacher
#21 Largest Private Schools in Indianapolis, IN
Holy Spirit Catholic School
Independent Catholic school · Grades Pre-K–8
377 students
Indianapolis, IN
BOverall grade377 students18 students per teacher
#22 Largest Private Schools in Indianapolis, IN
Covenant Christian High School
Christian school (nondenominational) · Grades 9–12
377 students
Indianapolis, IN
BOverall grade377 students13 students per teacher
#23 Largest Private Schools in Indianapolis, IN
Sycamore School
Independent school · Grades Pre-K–8
366 students
Indianapolis, IN
A+Overall grade366 students7 students per teacher
#24 Largest Private Schools in Indianapolis, IN
Little Flower Catholic School
Parish school · Grades Pre-K–8
353 students
Indianapolis, IN
A+Overall grade353 students12 students per teacher
From official public records, updated October 2026.