#49 Largest Private Schools in Missouri
St. Pius X High School
Diocesan school · Grades 9–12
415 students
Kansas City, MO
BOverall grade415 students12 students per teacher
2026 lists
Largest Private Schools in Missouri
The private schools in Missouri with the most students. Top 50 of 446 schools.
#50 Largest Private Schools in Missouri
Ascension School
Parish school · Grades K–8
412 students
Chesterfield, MO
BOverall grade412 students15 students per teacher
From official public records, updated October 2026.