Arlington Catholic High School/Saint Agnes School
Diocesan school · Grades Pre-K–12
Arlington, MA
16 Medford St, Arlington, MA 02474
Overall grade: A-
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- ACollege-going
- B+Years serving families
- A-Diversity
What stands out
- 98% of graduates go to four-year colleges
- Growing: enrollment up 17% since 2011–12
- Serving families in Arlington since at least 2011
- One school from pre-K through 12th grade
Arlington Catholic High School/Saint Agnes School is a Catholic diocesan school in Arlington, Massachusetts, for students from pre-K through 12th grade. It has about 851 students and around 10 students per teacher. Enrollment has grown about 17% since 2011–12. The school is part of the Archdiocese of Boston. The school reports that about 98% of its graduates go on to four-year colleges. Students attend about 6.5 hours a day, 180 days a year.
At a glance
- Grades
- Grades Pre-K–12
- Students
- 851
- Teachers
- 83.6 (full-time equivalent)
- Students per teacher
- 10.2
- Boys and girls
- Coed · 466 girls, 385 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Boston
- School day
- About 6.5 hours
- School year
- 180 days
- Graduates going to 4-year colleges
- About 98% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Larger than 80% of Catholic schools in Massachusetts.
- Compared with 10 Catholic schools in Massachusetts.
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 Arlington Catholic High School/Saint Agnes School
What grades does Arlington Catholic High School/Saint Agnes School serve?
Arlington Catholic High School/Saint Agnes School serves grades Pre-K–12.
How many students attend Arlington Catholic High School/Saint Agnes School?
About 851 students, with 10 students per teacher, according to official records.
How much is tuition at Arlington Catholic High School/Saint Agnes 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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