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St. Marys Elementary School

Diocesan school · Grades Pre-K–8

Rockville, MD

600 Veirs Mill Rd, Rockville, MD 20852

Overall grade: A+

ChooseAPrivateSchool.com grade, from official facts compared with similar schools.

  • AClass size
  • A-Years serving families
  • A+Diversity

What stands out

  • One of the most diverse private schools in Maryland
  • Smaller classes than 73% of Catholic schools in Maryland
  • Serving families in Rockville since at least 2011

In Rockville, Maryland, St. Marys Elementary School is a Catholic diocesan school for students from pre-K through 8th grade. About 148 students attend, with roughly 10 students per teacher, smaller classes than 73% of Catholic elementary schools in Maryland. It has been listed in official private school records 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
148
Teachers
15.3 (full-time equivalent)
Students per teacher
9.7
Boys and girls
Coed · 50 girls, 98 boys
Religious affiliation
Catholic · Diocesan school
School day
About 7 hours
School year
180 days
Library
Yes

Reviews

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    How it compares

    • Smaller classes than 73% of Catholic elementary schools in Maryland (10 students per teacher).
    • A smaller school: fewer students than 87% of Catholic elementary schools in Maryland.
    • Compared with 93 Catholic elementary schools in Maryland.

    Students by survey year

    221’11–12207’13–14165’15–16169’17–18158’19–20152’21–22148’23–24

    Total students reported in official records since 2011–12.

    Students by grade

    Pre-K29
    K21
    120
    221
    311
    411
    516
    618
    717
    813

    Student body

    White28%
    Black26%
    Hispanic or Latino24%
    Asian14%
    Two or more races7%

    Member of

    • National Catholic Educational Association

    Help paying tuition in Maryland

    These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Marys Elementary School whether it takes part.

    More about Maryland's programs →

    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?

    More questions to ask →

    Questions about St. Marys Elementary School

    What grades does St. Marys Elementary School serve?

    St. Marys Elementary School serves grades Pre-K–8.

    How many students attend St. Marys Elementary School?

    About 148 students, with 10 students per teacher, according to official records.

    How much is tuition at St. Marys Elementary 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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