#1 Largest Private Schools in Milwaukee, WI
St. Augustine Preparatory Academy
Christian school (nondenominational) · Grades Pre-K–12
1,759 students
Milwaukee, WI
B-Overall grade1,759 students15 students per teacher
2026 lists
Largest Private Schools in Milwaukee, WI
The private schools in Milwaukee, WI with the most students. Top 50 of 76 schools.
#2 Largest Private Schools in Milwaukee, WI
St. Anthony School
Parish school · Grades Pre-K–12
1,436 students
Milwaukee, WI
B-Overall grade1,436 students17 students per teacher
#3 Largest Private Schools in Milwaukee, WI
Messmer Catholic Schools
Independent Catholic school · Grades Pre-K–12
1,180 students
Milwaukee, WI
B-Overall grade1,180 students14 students per teacher
#4 Largest Private Schools in Milwaukee, WI
Messmer Catholic Schools
Independent Catholic school · Grades K–12
1,018 students
Milwaukee, WI
BOverall grade1,018 students13 students per teacher
#5 Largest Private Schools in Milwaukee, WI
Salam School
Islamic school · Grades Pre-K–12
985 students
Milwaukee, WI
AOverall grade985 students9 students per teacher
#6 Largest Private Schools in Milwaukee, WI
St. Marcus Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
956 students
Milwaukee, WI
B-Overall grade956 students18 students per teacher
#7 Largest Private Schools in Milwaukee, WI
Milwaukee Lutheran High School
Lutheran (Missouri Synod) school · Grades 9–12
934 students
Milwaukee, WI
B-Overall grade934 students18 students per teacher
#8 Largest Private Schools in Milwaukee, WI
Wisconsin Lutheran High School
Lutheran (Wisconsin Synod) school · Grades 9–12
921 students
Milwaukee, WI
A-Overall grade921 students12 students per teacher
#9 Largest Private Schools in Milwaukee, WI
Marquette University High School
Independent Catholic school · Grades 9–12
893 students
Milwaukee, WI
B+Overall gradeAll boys893 students15 students per teacher
#10 Largest Private Schools in Milwaukee, WI
Shining Star Christian Schools
Christian school (nondenominational) · Grades Pre-K–9
777 students
Milwaukee, WI
B-Overall grade777 students27 students per teacher
#11 Largest Private Schools in Milwaukee, WI
Divine Savior Holy Angels High School
Independent Catholic school · Grades 9–12
633 students
Milwaukee, WI
A+Overall gradeAll girls633 students12 students per teacher
#12 Largest Private Schools in Milwaukee, WI
St. Thomas More High School
Diocesan school · Grades 9–12
566 students
Milwaukee, WI
B-Overall grade566 students15 students per teacher
#13 Largest Private Schools in Milwaukee, WI
Hope Christian School: Fidelis
Christian school (nondenominational) · Grades Pre-K–8
551 students
Milwaukee, WI
B-Overall grade551 students31 students per teacher
#14 Largest Private Schools in Milwaukee, WI
Greater Holy Temple Christian Academy
Church of God in Christ school · Grades Pre-K–8
500 students
Milwaukee, WI
B-Overall grade500 students25 students per teacher
#15 Largest Private Schools in Milwaukee, WI
Hope Christian School-Semper
Christian school (nondenominational) · Grades Pre-K–8
497 students
Milwaukee, WI
B-Overall grade497 students25 students per teacher
#16 Largest Private Schools in Milwaukee, WI
Cristo Rey Jesuit Milwaukee High School
Independent Catholic school · Grades 9–12
464 students
Milwaukee, WI
B-Overall grade464 students16 students per teacher
#17 Largest Private Schools in Milwaukee, WI
Cross Trainers Academy
Christian school (nondenominational) · Grades Pre-K–12
453 students
Milwaukee, WI
B-Overall grade453 students13 students per teacher
#18 Largest Private Schools in Milwaukee, WI
Atlas Preparatory Academy High School
Independent school · Grades K–12
412 students
Milwaukee, WI
B-Overall grade412 students15 students per teacher
#19 Largest Private Schools in Milwaukee, WI
St. Joseph Academy
Independent Catholic school · Grades Pre-K–8
389 students
Milwaukee, WI
B-Overall grade389 students15 students per teacher
#20 Largest Private Schools in Milwaukee, WI
St. Adalbert Elementary School
Diocesan school · Grades K–8
385 students
Milwaukee, WI
B-Overall grade385 students17 students per teacher
#21 Largest Private Schools in Milwaukee, WI
Eastbrook Academy
Christian school (nondenominational) · Grades Pre-K–12
384 students
Milwaukee, WI
AOverall grade384 students12 students per teacher
#22 Largest Private Schools in Milwaukee, WI
Atonement Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
381 students
Milwaukee, WI
B-Overall grade381 students16 students per teacher
#23 Largest Private Schools in Milwaukee, WI
St. Sebastian School
Diocesan school · Grades Pre-K–8
340 students
Milwaukee, WI
B+Overall grade340 students14 students per teacher
#24 Largest Private Schools in Milwaukee, WI
Dominican High School
Independent Catholic school · Grades 8–12
336 students
Milwaukee, WI
A+Overall grade336 students13 students per teacher
From official public records, updated October 2026.