#25 Largest Private Schools in Missouri
Notre Dame De Sion School
Independent Catholic school · Grades Pre-K–12
544 students
Kansas City, MO
A+Overall grade544 students8 students per teacher
2026 lists
Largest Private Schools in Missouri
The private schools in Missouri with the most students. Top 50 of 446 schools.
#26 Largest Private Schools in Missouri
Notre Dame De Sion High School
Independent Catholic school · Grades Pre-K–12
539 students
Kansas City, MO
A-Overall grade539 students9 students per teacher
#27 Largest Private Schools in Missouri
Cor Jesu Academy
Independent Catholic school · Grades 9–12
519 students
Saint Louis, MO
A+Overall gradeAll girls519 students11 students per teacher
#28 Largest Private Schools in Missouri
St. Catherine Laboure School
Parish school · Grades K–8
482 students
Saint Louis, MO
BOverall grade482 students18 students per teacher
#29 Largest Private Schools in Missouri
St. Gabriel the Archangel School
Parish school · Grades K–8
475 students
Saint Louis, MO
BOverall grade475 students15 students per teacher
#30 Largest Private Schools in Missouri
Immaculate Conception School
Parish school · Grades Pre-K–8
475 students
Springfield, MO
B-Overall grade475 students13 students per teacher
#31 Largest Private Schools in Missouri
Villa Duchesne Upper and Lower School
Independent Catholic school · Grades Pre-K–12
465 students
Saint Louis, MO
BOverall grade465 students9 students per teacher
#32 Largest Private Schools in Missouri
Lutheran High School of St. Charles County
Lutheran (Missouri Synod) school · Grades 9–12
460 students
Saint Peters, MO
BOverall grade460 students15 students per teacher
#33 Largest Private Schools in Missouri
Villa Duchesne School
Independent Catholic school · Grades Pre-K–12
459 students
Saint Louis, MO
A+Overall grade459 students4 students per teacher
#34 Largest Private Schools in Missouri
St. Gerard Majella Catholic School
Parish school · Grades Pre-K–8
457 students
Kirkwood, MO
BOverall grade457 students14 students per teacher
#35 Largest Private Schools in Missouri
Cardinal Ritter College Prep High School
Diocesan school · Grades 9–12
453 students
Saint Louis, MO
BOverall grade453 students13 students per teacher
#36 Largest Private Schools in Missouri
St. Francis Borgia High School
Diocesan school · Grades 9–12
452 students
Washington, MO
B-Overall grade452 students16 students per teacher
#37 Largest Private Schools in Missouri
St. Joseph Christian School
Christian school (nondenominational) · Grades Pre-K–12
452 students
Saint Joseph, MO
B-Overall grade452 students13 students per teacher
#38 Largest Private Schools in Missouri
Incarnate Word Parish School
Parish school · Grades K–8
448 students
Chesterfield, MO
B-Overall grade448 students18 students per teacher
#39 Largest Private Schools in Missouri
Visitation Catholic School
Diocesan school · Grades K–8
447 students
Kansas City, MO
BOverall grade447 students13 students per teacher
#40 Largest Private Schools in Missouri
Christ Community Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
447 students
Kirkwood, MO
B-Overall grade447 students17 students per teacher
#41 Largest Private Schools in Missouri
St. Vincent De Paul Jr/Sr Schools
Diocesan school · Grades Pre-K–12
446 students
Perryville, MO
B-Overall grade446 students13 students per teacher
#42 Largest Private Schools in Missouri
St. Patrick School
Diocesan school · Grades Pre-K–8
436 students
Wentzville, MO
B-Overall grade436 students17 students per teacher
#43 Largest Private Schools in Missouri
St. Peter Catholic School
Diocesan school · Grades Pre-K–8
435 students
Jefferson City, MO
B+Overall grade435 students11 students per teacher
#44 Largest Private Schools in Missouri
St. Thomas More School
Parish school · Grades Pre-K–8
434 students
Kansas City, MO
AOverall grade434 students11 students per teacher
#45 Largest Private Schools in Missouri
Christian Fellowship School
Christian school (nondenominational) · Grades Pre-K–12
433 students
Columbia, MO
BOverall grade433 students11 students per teacher
#46 Largest Private Schools in Missouri
Greenwood Laboratory School
Independent school · Grades K–12
431 students
Springfield, MO
BOverall grade431 students14 students per teacher
#47 Largest Private Schools in Missouri
Principia School
Religious school · Grades Pre-K–12
423 students
Saint Louis, MO
A+Overall grade423 students8 students per teacher
#48 Largest Private Schools in Missouri
Holy Infant Elementary School
Parish school · Grades Pre-K–8
420 students
Ballwin, MO
B-Overall grade420 students16 students per teacher
From official public records, updated October 2026.