St. Mary's School
Diocesan school · Grades Pre-K–K
Winchester, MA
162 Washington St, Winchester, MA 01890
Overall grade: B+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B-Class size
- B+Years serving families
What stands out
- Serving families in Winchester since at least 2011
St. Mary's School is a Catholic diocesan school in Winchester, Massachusetts, for students from pre-K through kindergarten. It has about 12 students and around 12 students per teacher. The school is part of the Archdiocese of Boston. Students attend about 6 hours a day, 175 days a year.
At a glance
- Grades
- Grades Pre-K–K
- Students
- 12
- Teachers
- 1 (full-time equivalent)
- Students per teacher
- 12
- Boys and girls
- Coed · 0 girls, 12 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Boston
- Program
- Early childhood program
- School day
- About 6 hours
- School year
- 175 days
Reviews
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How it compares
- Larger than 73% of preschool programs in Massachusetts.
- Compared with 49 preschool programs in Massachusetts.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
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. Mary's School
What grades does St. Mary's School serve?
St. Mary's School serves grades Pre-K–K.
How many students attend St. Mary's School?
About 12 students, with 12 students per teacher, according to official records.
How much is tuition at St. Mary's 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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