#1 Best Private High Schools in Marion County, IN
International School of Indiana
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Indiana
Indianapolis, IN
A+Overall grade423 students5 students per teacher
2026 lists
Best Private High Schools in Marion County, IN
Private high schools in Marion County, IN with the highest overall grades. Top 19 of 19 schools.
#2 Best Private High Schools in Marion County, IN
Brebeuf Jesuit Preparatory School
Independent Catholic school · Grades 9–12
Smaller classes than 77% of Catholic schools in Indiana
Indianapolis, IN
A+Overall grade829 students11 students per teacher
#3 Best Private High Schools in Marion County, IN
Scecina Memorial High School
Diocesan school · Grades 9–12
One of the most diverse private schools in Indiana
Indianapolis, IN
A+Overall grade454 students12 students per teacher
#4 Best Private High Schools in Marion County, IN
School of Knowledge
Islamic school · Grades Pre-K–12
One of the 3 largest private schools in Indiana
Indianapolis, IN
A+Overall grade422 students10 students per teacher
#5 Best Private High Schools in Marion County, IN
Cathedral High School
Parish school · Grades Pre-K–12
The largest of 160 Catholic schools in Indiana
Indianapolis, IN
A+Overall grade1,171 students13 students per teacher
#6 Best Private High Schools in Marion County, IN
Providence Cristo Rey High School
Independent Catholic school · Grades 9–12
Smaller classes than 68% of Catholic schools in Indiana
Indianapolis, IN
A+Overall grade237 students11 students per teacher
#7 Best Private High Schools in Marion County, IN
Legacy Learning Center
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Indianapolis, IN
AOverall grade271 students10 students per teacher
#8 Best Private High Schools in Marion County, IN
Crosspointe Christian Academy
Baptist school · Grades Pre-K–12
90% of graduates go to four-year colleges
Indianapolis, IN
AOverall grade268 students12 students per teacher
#9 Best Private High Schools in Marion County, IN
Heritage Christian School
Christian school (nondenominational) · Grades Pre-K–12
The largest of 207 Christian schools in Indiana
Indianapolis, IN
A-Overall grade1,476 students12 students per teacher
#10 Best Private High Schools in Marion County, IN
Park Tudor School
Alternative school · Grades Pre-K–12
The largest of 22 independent schools in Indiana
Indianapolis, IN
B+Overall grade956 students10 students per teacher
#11 Best Private High Schools in Marion County, IN
Cardinal Ritter High School
Diocesan school · Grades 7–12
Serving families in Indianapolis since at least 2011
Indianapolis, IN
B+Overall grade585 students14 students per teacher
#12 Best Private High Schools in Marion County, IN
Colonial Christian School
Baptist school · Grades Pre-K–12
100% of graduates go to four-year colleges
Indianapolis, IN
B+Overall grade245 students14 students per teacher
#13 Best Private High Schools in Marion County, IN
Horizon Christian School
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 27% since 2015–16
Indianapolis, IN
B+Overall grade343 students10 students per teacher
#14 Best Private High Schools in Marion County, IN
Providence Cristo Rey High School
Independent Catholic school · Grades 9–12
Smaller classes than 68% of Catholic schools in Indiana
Indianapolis, IN
B+Overall grade237 students11 students per teacher
#15 Best Private High Schools in Marion County, IN
Covenant Christian High School
Christian school (nondenominational) · Grades 9–12
85% of graduates go to four-year colleges
Indianapolis, IN
BOverall grade377 students13 students per teacher
#16 Best Private High Schools in Marion County, IN
Calvary Christian School
Pentecostal school · Grades K–12
One of 30 Christian schools in Indianapolis
Indianapolis, IN
BOverall grade216 students12 students per teacher
#17 Best Private High Schools in Marion County, IN
Roncalli High School
Diocesan school · Grades 9–12
One of the 3 largest Catholic schools in Indiana
Indianapolis, IN
BOverall grade1,082 students14 students per teacher
#18 Best Private High Schools in Marion County, IN
Lutheran High School of Indianapolis
Lutheran (Missouri Synod) school · Grades 9–12
90% of graduates go to four-year colleges
Indianapolis, IN
BOverall grade268 students17 students per teacher
#19 Best Private High Schools in Marion County, IN
Suburban Christian School
Baptist school · Grades Pre-K–12
Growing: enrollment up 500% since 2011–12
Indianapolis, IN
B-Overall grade600 students18 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.