Mount St. Mary Academy
Independent Catholic school · Grades 9–12
Buffalo, NY
3756 Delaware Ave 1, Buffalo, NY 14217
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- A-College-going
- A-Years serving families
- B+Diversity
What stands out
- The smallest classes of any Catholic school in Buffalo
- Smaller classes than 89% of Catholic schools in New York
- 91% of graduates go to four-year colleges
- Serving families in Buffalo since at least 2011
In Buffalo, New York, Mount St. Mary Academy is an independent Catholic school for students from 9th grade through 12th grade. About 216 students attend, with roughly 8 students per teacher, smaller classes than 89% of Catholic high schools in New York. It has been listed in official private school records since 2011–12. The school is an all-girls school and is part of the Diocese of Buffalo. The school reports that about 91% of its graduates go on to four-year colleges. The school day runs about 7 hours, 172 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 216
- Teachers
- 26.3 (full-time equivalent)
- Students per teacher
- 8.2
- Boys and girls
- All girls
- Religious affiliation
- Catholic · Independent Catholic school
- Diocese
- Diocese of Buffalo
- School day
- About 7 hours
- School year
- 172 days
- Graduates going to 4-year colleges
- About 91% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 89% of Catholic high schools in New York (8 students per teacher).
- A smaller school: fewer students than 77% of Catholic high schools in New York.
- Compared with 64 Catholic high schools in New York.
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 Mount St. Mary Academy
What grades does Mount St. Mary Academy serve?
Mount St. Mary Academy serves grades 9–12.
How many students attend Mount St. Mary Academy?
About 216 students, with 8 students per teacher, according to official records.
How much is tuition at Mount St. Mary Academy?
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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