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St. Mary School

Diocesan school · Grades Pre-K–8

Aberdeen, WA

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518 N H St, Aberdeen, WA 98520

Overall grade: B+

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

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

What stands out

  • Serving families in Aberdeen since at least 2011

St. Mary School is a Catholic diocesan school in Aberdeen, Washington, for students from pre-K through 8th grade. It has about 116 students and around 17 students per teacher. It has been listed in official private school records since 2011–12. The school is part of the Archdiocese of Seattle. Students attend about 6.5 hours a day, 180 days a year.

At a glance

Grades
Grades Pre-K–8
Students
116
Teachers
6.9 (full-time equivalent)
Students per teacher
16.8
Boys and girls
Coed · 45 girls, 71 boys
Religious affiliation
Catholic · Diocesan school
School day
About 6.5 hours
School year
180 days
Library
Yes

Reviews

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    How it compares

    • A smaller school: fewer students than 76% of Catholic elementary schools in Washington.
    • Compared with 72 Catholic elementary schools in Washington.

    Students by survey year

    145’11–12110’13–14123’15–16135’17–18135’19–20106’21–22116’23–24

    Total students reported in official records since 2011–12.

    Students by grade

    Pre-K14
    K13
    116
    26
    317
    415
    516
    69
    715
    89

    Student body

    White47%
    Hispanic or Latino28%
    Two or more races21%
    Asian3%
    American Indian or Alaska Native2%
    Black1%

    Member of

    • National Catholic Educational Association

    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. Mary School

    What grades does St. Mary School serve?

    St. Mary School serves grades Pre-K–8.

    How many students attend St. Mary School?

    About 116 students, with 17 students per teacher, according to official records.

    How much is tuition at St. Mary School?

    Call the school to ask about tuition, financial aid and payment plans.

    Official record · Updated October 2026 · Official search · Something wrong? Tell us

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