2026 lists
Private high schools in St. Louis County, MO with the highest overall grades. Top 24 of 24 schools.
#1 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
Smaller classes than 87% of Catholic schools in Missouri
Saint Louis, MO
#2 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
100% of graduates go to four-year colleges
Saint Louis, MO
#3 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades Pre-K–12
The smallest classes of any Catholic school in Saint Louis
Saint Louis, MO
#4 Best Private High Schools in St. Louis County, MO
Independent school · Grades 7–12
100% of graduates go to four-year colleges
Saint Louis, MO
#5 Best Private High Schools in St. Louis County, MO
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Missouri
Saint Louis, MO
#6 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 7–12
100% of graduates go to four-year colleges
Saint Louis, MO
#7 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
100% of graduates go to four-year colleges
Saint Louis, MO
#8 Best Private High Schools in St. Louis County, MO
Religious school · Grades Pre-K–12
The largest of 36 private schools in Missouri
Saint Louis, MO
#9 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
Smaller classes than 74% of Catholic schools in Missouri
Saint Louis, MO
#10 Best Private High Schools in St. Louis County, MO
Independent school · Grades 6–12
98% of graduates go to four-year colleges
Saint Louis, MO
#11 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
One of the 3 largest Catholic schools in Missouri
Saint Louis, MO
#12 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades Pre-K–12
100% of graduates go to four-year colleges
Saint Louis, MO
#13 Best Private High Schools in St. Louis County, MO
Presbyterian school · Grades 7–12
One of the 3 largest Christian schools in Missouri
Town and Country, MO
#14 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
The only all-boys school in Kirkwood
Kirkwood, MO
#15 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
96% of graduates go to four-year colleges
Saint Louis, MO
#16 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 6–12
96% of graduates go to four-year colleges
Saint Louis, MO
#17 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades 9–12
100% of graduates go to four-year colleges
Saint Louis, MO
#18 Best Private High Schools in St. Louis County, MO
Lutheran (Missouri Synod) school · Grades 9–12
The largest Christian school in Saint Louis
Saint Louis, MO
#19 Best Private High Schools in St. Louis County, MO
Independent Catholic school · Grades Pre-K–12
100% of graduates go to four-year colleges
Saint Louis, MO
#20 Best Private High Schools in St. Louis County, MO
Christian school (nondenominational) · Grades Pre-K–12
The largest Christian school in Florissant
Florissant, MO
#21 Best Private High Schools in St. Louis County, MO
Alternative school · Grades 1–12
The largest of 44 independent schools in Missouri
Saint Louis, MO
#22 Best Private High Schools in St. Louis County, MO
Diocesan school · Grades 9–12
100% of graduates go to four-year colleges
Saint Louis, MO
#23 Best Private High Schools in St. Louis County, MO
Christian school (nondenominational) · Grades 9–12
90% of graduates go to four-year colleges
Saint Louis, MO
#24 Best Private High Schools in St. Louis County, MO
Lutheran (Missouri Synod) school · Grades 6–12
90% of graduates go to four-year colleges
Saint Louis, MO
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.