#1 Largest Private Schools in Lake County, IN
Crown Point Christian School
Christian school (nondenominational) · Grades Pre-K–8
837 students
Saint John, IN
B-Overall grade837 students16 students per teacher
2026 lists
Largest Private Schools in Lake County, IN
The private schools in Lake County, IN with the most students. Top 35 of 35 schools.
#2 Largest Private Schools in Lake County, IN
Illiana Christian High School
Calvinist school · Grades 9–12
545 students
Dyer, IN
B-Overall grade545 students14 students per teacher
#3 Largest Private Schools in Lake County, IN
Illiana Christian High School
Calvinist school · Grades 9–12
544 students
Dyer, IN
B-Overall grade544 students16 students per teacher
#4 Largest Private Schools in Lake County, IN
Highland Christian School
Calvinist school · Grades Pre-K–8
531 students
Highland, IN
B+Overall grade531 students14 students per teacher
#5 Largest Private Schools in Lake County, IN
St. Thomas More School
Diocesan school · Grades Pre-K–8
468 students
Munster, IN
B+Overall grade468 students16 students per teacher
#6 Largest Private Schools in Lake County, IN
Andrean High School
Diocesan school · Grades 9–12
455 students
Merrillville, IN
A+Overall grade455 students14 students per teacher
#7 Largest Private Schools in Lake County, IN
St. John Evangelist School
Diocesan school · Grades Pre-K–8
371 students
Saint John, IN
B+Overall grade371 students14 students per teacher
#8 Largest Private Schools in Lake County, IN
St. Casimir School
Diocesan school · Grades Pre-K–8
340 students
Hammond, IN
B-Overall grade340 students19 students per teacher
#9 Largest Private Schools in Lake County, IN
Hammond Baptist High School
Baptist school · Grades Pre-K–12
265 students
Schererville, IN
B-Overall grade265 students14 students per teacher
#10 Largest Private Schools in Lake County, IN
Plum Creek Christian Academy
Baptist school · Grades Pre-K–12
243 students
Dyer, IN
B-Overall grade243 students14 students per teacher
#11 Largest Private Schools in Lake County, IN
Plum Creek Christian Academy
Baptist school · Grades Pre-K–12
242 students
Dyer, IN
BOverall grade242 students14 students per teacher
#12 Largest Private Schools in Lake County, IN
St. John Bosco Elementary School
Diocesan school · Grades Pre-K–8
226 students
Hammond, IN
B+Overall grade226 students15 students per teacher
#13 Largest Private Schools in Lake County, IN
Protestant Reformed/Heritage Christian Schools
Calvinist school · Grades K–12
217 students
Dyer, IN
BOverall grade217 students11 students per teacher
#14 Largest Private Schools in Lake County, IN
Aquinas Catholic Community School
Diocesan school · Grades Pre-K–8
212 students
Merrillville, IN
B+Overall grade212 students17 students per teacher
#15 Largest Private Schools in Lake County, IN
St. Michael Catholic School
Parish school · Grades Pre-K–8
202 students
Schererville, IN
A+Overall grade202 students11 students per teacher
#16 Largest Private Schools in Lake County, IN
St. Mary School
Parish school · Grades Pre-K–8
193 students
Griffith, IN
B+Overall grade193 students18 students per teacher
#17 Largest Private Schools in Lake County, IN
Calumet Christian School
Christian school (nondenominational) · Grades K–12
191 students
Griffith, IN
BOverall grade191 students12 students per teacher
#18 Largest Private Schools in Lake County, IN
Ambassador Christian Academy
Christian school (nondenominational) · Grades K–8
184 students
Gary, IN
B-Overall grade184 students13 students per teacher
#19 Largest Private Schools in Lake County, IN
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
166 students
Crown Point, IN
AOverall grade166 students12 students per teacher
#20 Largest Private Schools in Lake County, IN
Forest Ridge Academy
Independent school · Grades Pre-K–8
157 students
Schererville, IN
A+Overall grade157 students6 students per teacher
#21 Largest Private Schools in Lake County, IN
St. Paul's Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
157 students
Munster, IN
A+Overall grade157 students11 students per teacher
#22 Largest Private Schools in Lake County, IN
St. Stanislaus School
Diocesan school · Grades Pre-K–8
157 students
East Chicago, IN
BOverall grade157 students13 students per teacher
#23 Largest Private Schools in Lake County, IN
Indiana Horizon Academy
Islamic school · Grades Pre-K–8
145 students
Crown Point, IN
B+Overall grade145 students8 students per teacher
#24 Largest Private Schools in Lake County, IN
Our Lady of Grace School
Parish school · Grades Pre-K–8
144 students
Highland, IN
AOverall grade144 students14 students per teacher
From official public records, updated October 2026.