Assumption Catholic School
Parish school · Grades Pre-K–8
O'Fallon, MO
203 W 3rd St, O'Fallon, MO 63366
Overall grade: B-
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- BYears serving families
- BDiversity
What stands out
- One of 2 Catholic schools in O'Fallon
Assumption Catholic School is a Catholic parish school in O'Fallon, Missouri, for students from pre-K through 8th grade. It has about 374 students and around 14 students per teacher. The school is part of the Archdiocese of St. Louis. Students attend about 8.5 hours a day, 177 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
- 374
- Teachers
- 27.3 (full-time equivalent)
- Students per teacher
- 13.7
- Boys and girls
- Coed · 192 girls, 182 boys
- Religious affiliation
- Catholic · Parish school
- Diocese
- Archdiocese of St. Louis
- School day
- About 8.5 hours
- School year
- 177 days
- Library
- Yes
Reviews
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How it compares
- Larger than 86% 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 2019–20.
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 Assumption Catholic School 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 Assumption Catholic School
What grades does Assumption Catholic School serve?
Assumption Catholic School serves grades Pre-K–8.
How many students attend Assumption Catholic School?
About 374 students, with 14 students per teacher, according to official records.
How much is tuition at Assumption Catholic School?
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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