St. Mary's Catholic High School
Diocesan school · Grades 9–12
Phoenix, AZ
2525 N 3rd St, Phoenix, AZ 85004
Overall grade: B+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- A-College-going
- B+Years serving families
- A-Diversity
What stands out
- 90% of graduates go to four-year colleges
- Serving families in Phoenix since at least 2011
St. Mary's Catholic High School is a Catholic diocesan school in Phoenix, Arizona, for students from 9th grade through 12th grade. It has about 487 students and around 13 students per teacher. The school is part of the Diocese of Phoenix. The school reports that about 90% of its graduates go on to four-year colleges. Students attend about 7 hours a day, 180 days a year. Arizona has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades 9–12
- Students
- 487
- Teachers
- 36.5 (full-time equivalent)
- Students per teacher
- 13.3
- Boys and girls
- Coed · 209 girls, 278 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Phoenix
- School day
- About 7 hours
- School year
- 180 days
- Graduates going to 4-year colleges
- About 90% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- A smaller school: fewer students than 60% of Catholic high schools in Arizona.
- Compared with 10 Catholic high schools in Arizona.
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 Arizona
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Mary's Catholic High School whether it takes part.
- Empowerment Scholarship Account (ESA) · Education savings account
- School tuition organization (STO) tax credit · Tax-credit scholarship
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 Catholic High School
What grades does St. Mary's Catholic High School serve?
St. Mary's Catholic High School serves grades 9–12.
How many students attend St. Mary's Catholic High School?
About 487 students, with 13 students per teacher, according to official records.
How much is tuition at St. Mary's Catholic High School?
Call the school to ask about tuition, financial aid and payment plans. Arizona 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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