St. Mary's South Side Catholic High School, Saint Louis, MO

St. Mary's South Side Catholic High School is a Roman Catholic private school in Saint Louis, MO teaching grades 9-12. It reported 203 students and about 9 students for every teacher in the 2023-24 federal survey.

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School facts

Grades: 9-12
Students: 203
Teachers: 30
Students per teacher: 9
Student body: All-boys
Program: Regular
Affiliation: Roman Catholic
Go on to a 4-year college: 46%
Setting: City

Member of: National Catholic Educational Association

These are the numbers the school gave the U.S. Department of Education for the 2023-24 school year, published in July 2026. Enrollment and staffing move every year, so ask the school for today’s figures. Where this comes from. Something wrong? Tell us and we will fix it.

What Missouri pays, and what that leaves you

MO

MOScholars Tax-credit scholarship

A scholarship set each year by the State Treasurer We could not verify the 2026-27 per-student figure and will not guess it.

Figures read from each program’s official pages, 2026-09-20. Sources and how to apply

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Other private schools nearby

School	Grades	Students	Per teacher	Affiliation	Miles
St. Cecilia School	Transitional 1st-8	178	14.4	Roman Catholic	<1
St. Stephen Protomartyr School	PreK-8	159	14.3	Roman Catholic	<1
Marian Middle School	6-8	44	6.3	Roman Catholic	2
St. Frances Cabrini Academy	K-8	185	14.8	Roman Catholic	2
Tower Grove Christian Academy	PreK-8	101	9.8	Baptist	2
South City Community School	PreK-8	184	15	Christian (nondenominational)	2
South City Catholic Academy Learning Center	2-8	14	5.4	Roman Catholic	3
St. Gabriel the Archangel School	K-8	475	15.3	Roman Catholic	3

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