St. Simon the Apostle
Diocesan school · Grades Pre-K–8
Saint Louis, MO
11019 Mueller Rd, Saint Louis, MO 63123
Overall grade: A
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- AClass size
- A-Years serving families
- BDiversity
What stands out
- Smaller classes than 74% of Catholic schools in Missouri
- Serving families in Saint Louis since at least 2011
St. Simon the Apostle is a Catholic diocesan school in Saint Louis, Missouri, for students from pre-K through 8th grade. It has about 128 students and around 9 students per teacher, smaller classes than 74% of Catholic elementary schools in Missouri. It has been listed in official private school records since 2011–12. The school is part of the Archdiocese of St. Louis. Students attend about 7.5 hours a day, 178 days a year. Missouri has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 128
- Teachers
- 14.3 (full-time equivalent)
- Students per teacher
- 9
- Boys and girls
- Coed · 71 girls, 57 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of St. Louis
- School day
- About 7.5 hours
- School year
- 178 days
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 74% of Catholic elementary schools in Missouri (9 students per teacher).
- A smaller school: fewer students than 62% of Catholic elementary schools in Missouri.
- Compared with 154 Catholic elementary schools in Missouri.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
Help paying tuition in Missouri
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Simon the Apostle whether it takes part.
- MOScholars · Tax-credit scholarship
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about St. Simon the Apostle
What grades does St. Simon the Apostle serve?
St. Simon the Apostle serves grades Pre-K–8.
How many students attend St. Simon the Apostle?
About 128 students, with 9 students per teacher, according to official records.
How much is tuition at St. Simon the Apostle?
Call the school to ask about tuition, financial aid and payment plans. Missouri has programs that can help pay private school tuition; ask whether the school takes part.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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