#1 College-Bound Private High Schools in St. Charles County, MO
St. Dominic High School
Diocesan school · Grades 9–12
94% of graduates go to four-year colleges
O'Fallon, MO
B-Overall grade1,087 students17 students per teacher
2026 lists
College-Bound Private High Schools in St. Charles County, MO
Private high schools in St. Charles County, MO where the most graduates go on to four-year colleges. Top 6 of 6 schools.
#2 College-Bound Private High Schools in St. Charles County, MO
Lutheran High School of St. Charles County
Lutheran (Missouri Synod) school · Grades 9–12
89% of graduates go to four-year colleges
Saint Peters, MO
BOverall grade460 students15 students per teacher
#3 College-Bound Private High Schools in St. Charles County, MO
Duchesne High School
Diocesan school · Grades 9–12
80% of graduates go to four-year colleges
Saint Charles, MO
A+Overall grade225 students8 students per teacher
#4 College-Bound Private High Schools in St. Charles County, MO
St. John Paul II Preparatory
Independent Catholic school · Grades Pre-K–12
80% of graduates go to four-year colleges
Saint Charles, MO
B-Overall grade176 students7 students per teacher
#5 College-Bound Private High Schools in St. Charles County, MO
Christian School District
Christian school (nondenominational) · Grades Pre-K–12
79% of graduates go to four-year colleges
O'Fallon, MO
B-Overall grade596 students13 students per teacher
#6 College-Bound Private High Schools in St. Charles County, MO
Christian School District
Christian school (nondenominational) · Grades Pre-K–12
79% of graduates go to four-year colleges
O'Fallon, MO
B-Overall grade596 students12 students per teacher
From official public records, updated October 2026.