St. Mary of the Assumption School
Diocesan school · Grades Pre-K–8
Upper Marlboro, MD
4610 Largo Rd, Upper Marlboro, MD 20772
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- BClass size
- A-Years serving families
- ADiversity
What stands out
- The only Catholic school in Upper Marlboro
- Serving families in Upper Marlboro since at least 2011
In Upper Marlboro, Maryland, St. Mary of the Assumption School is a Catholic diocesan school for students from pre-K through 8th grade. About 230 students attend, with roughly 16 students per teacher. Its enrollment has held steady since 2011–12. The school is part of the Archdiocese of Washington. The school day runs about 7 hours, 180 days a year. Maryland has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 230
- Teachers
- 14 (full-time equivalent)
- Students per teacher
- 16.4
- Boys and girls
- Coed · 120 girls, 110 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Washington
- School day
- About 7 hours
- School year
- 180 days
- Library
- Yes
Reviews
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How it compares
- A smaller school: fewer students than 51% of Catholic elementary schools in Maryland.
- Compared with 93 Catholic elementary schools in Maryland.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Help paying tuition in Maryland
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Mary of the Assumption School whether it takes part.
- BOOST Scholarship Program · Voucher or 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. Mary of the Assumption School
What grades does St. Mary of the Assumption School serve?
St. Mary of the Assumption School serves grades Pre-K–8.
How many students attend St. Mary of the Assumption School?
About 230 students, with 16 students per teacher, according to official records.
How much is tuition at St. Mary of the Assumption School?
Call the school to ask about tuition, financial aid and payment plans. Maryland 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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