St. Alphonsus School
Diocesan school · Grades Pre-K–8
Seattle, WA
5816 15th Ave NW, Seattle, WA 98107
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- AClass size
- B+Years serving families
- B+Diversity
What stands out
- Smaller classes than 74% of Catholic schools in Washington
- Serving families in Seattle since at least 2011
St. Alphonsus School is a Catholic diocesan school in Seattle, Washington, for students from pre-K through 8th grade. It has about 139 students and around 11 students per teacher, smaller classes than 74% of Catholic elementary schools in Washington. The school is part of the Archdiocese of Seattle. Students attend about 7 hours a day, 179 days a year.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 139
- Teachers
- 13.3 (full-time equivalent)
- Students per teacher
- 10.5
- Boys and girls
- Coed · 62 girls, 77 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Seattle
- School day
- About 7 hours
- School year
- 179 days
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 74% of Catholic elementary schools in Washington (11 students per teacher).
- A smaller school: fewer students than 68% of Catholic elementary schools in Washington.
- Compared with 72 Catholic elementary schools in Washington.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
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?
Questions about St. Alphonsus School
What grades does St. Alphonsus School serve?
St. Alphonsus School serves grades Pre-K–8.
How many students attend St. Alphonsus School?
About 139 students, with 11 students per teacher, according to official records.
How much is tuition at St. Alphonsus 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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