Cantwell Sacred Heart of Mary
Diocesan school · Grades 9–12
Montebello, CA
329 N Garfield Ave, Montebello, CA 90640
Overall grade: B-
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B-Class size
- A-College-going
- A-Years serving families
- BDiversity
What stands out
- 85% of graduates go to four-year colleges
- Serving families in Montebello since at least 2011
Cantwell Sacred Heart of Mary is a Catholic diocesan school in Montebello, California, for students from 9th grade through 12th grade. It has about 352 students and around 20 students per teacher. It has been listed in official private school records since 2011–12. The school is part of the Archdiocese of Los Angeles. The school reports that about 85% 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 9–12
- Students
- 352
- Teachers
- 17.5 (full-time equivalent)
- Students per teacher
- 20.1
- Boys and girls
- Coed · 186 girls, 166 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Los Angeles
- School day
- About 6.5 hours
- School year
- 180 days
- Graduates going to 4-year colleges
- About 85% (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 67% of Catholic high schools in California.
- Compared with 86 Catholic high schools in California.
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 Cantwell Sacred Heart of Mary
What grades does Cantwell Sacred Heart of Mary serve?
Cantwell Sacred Heart of Mary serves grades 9–12.
How many students attend Cantwell Sacred Heart of Mary?
About 352 students, with 20 students per teacher, according to official records.
How much is tuition at Cantwell Sacred Heart of Mary?
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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