St. Marys School
Diocesan school · Grades Pre-K–8
Boise, ID
2620 W State St, Boise, ID 83702
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- A-Years serving families
- A-Diversity
What stands out
- Smaller classes than 92% of Catholic schools in Idaho
- The smallest classes of any Catholic school in Boise
- Serving families in Boise since at least 2011
In Boise, Idaho, St. Marys School is a Catholic diocesan school for students from pre-K through 8th grade. About 109 students attend, with roughly 6 students per teacher, smaller classes than 92% of Catholic elementary schools in Idaho. It has been listed in official private school records since 2011–12. The school is part of the Diocese of Boise. The school day runs about 7.5 hours, 180 days a year. Idaho has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 109
- Teachers
- 18.3 (full-time equivalent)
- Students per teacher
- 6
- Boys and girls
- Coed · 64 girls, 45 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Boise
- School day
- About 7.5 hours
- School year
- 180 days
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 92% of Catholic elementary schools in Idaho (6 students per teacher).
- A smaller school: fewer students than 69% of Catholic elementary schools in Idaho.
- Compared with 13 Catholic elementary schools in Idaho.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
Help paying tuition in Idaho
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Marys School whether it takes part.
- Idaho Parental Choice Tax Credit · Tax credit or deduction
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. Marys School
What grades does St. Marys School serve?
St. Marys School serves grades Pre-K–8.
How many students attend St. Marys School?
About 109 students, with 6 students per teacher, according to official records.
How much is tuition at St. Marys School?
Call the school to ask about tuition, financial aid and payment plans. Idaho 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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