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Mater Dei School

Diocesan school · Grades Pre-K–4

Sioux City, IA

3719 Ridge Ave # Pk-4, Sioux City, IA 51106

Overall grade: A+

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

  • AClass size
  • B+Years serving families
  • B+Diversity

What stands out

  • The smallest classes of any Catholic school in Sioux City
  • Smaller classes than 76% of Catholic schools in Iowa
  • Serving families in Sioux City since at least 2011

Mater Dei School is a Catholic diocesan school in Sioux City, Iowa, for students from pre-K through 4th grade. It has about 130 students and around 9 students per teacher, smaller classes than 76% of Catholic elementary schools in Iowa. The school is part of the Diocese of Sioux City. Students attend about 8 hours a day, 178 days a year. Iowa has programs that can help pay tuition; ask the school whether it takes part.

At a glance

Grades
Grades Pre-K–4
Students
130
Teachers
14.6 (full-time equivalent)
Students per teacher
8.9
Boys and girls
Coed · 59 girls, 71 boys
Religious affiliation
Catholic · Diocesan school
School day
About 8 hours
School year
178 days
Library
Yes

Reviews

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    How it compares

    • Smaller classes than 76% of Catholic elementary schools in Iowa (9 students per teacher).
    • A smaller school: fewer students than 61% of Catholic elementary schools in Iowa.
    • Compared with 67 Catholic elementary schools in Iowa.

    Students by survey year

    211’11–12203’15–16190’17–18336’19–20153’21–22130’23–24

    Total students reported in official records since 2011–12.

    Students by grade

    Pre-K21
    K26
    121
    222
    330
    431

    Student body

    White82%
    Hispanic or Latino8%
    Black6%
    Two or more races2%
    Asian2%
    Native Hawaiian or Pacific Islander1%

    Member of

    • National Catholic Educational Association

    Help paying tuition in Iowa

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

    More about Iowa'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 Mater Dei School

    What grades does Mater Dei School serve?

    Mater Dei School serves grades Pre-K–4.

    How many students attend Mater Dei School?

    About 130 students, with 9 students per teacher, according to official records.

    How much is tuition at Mater Dei School?

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