Cantwell-Sacred Heart of Mary, a College Preparatory High School owned and operated by the Archdiocese of Los Angeles, provides an educational environment which promotes Gospel values, celebrates diversity, develops self-worth and respect for others, encourages personal responsibility, and challenges students to share their gifts in building a just and peaceful society.
Cantwell-Sacred Heart of Mary High School is fully accredited by the Western Association of Schools and Colleges and offers curricular and co-curricular activities providing all students with opportunities to pursue their interests in a supportive learning environment.
The curriculum prepares students for admission to four-year university programs and other career challenges.
The co-curricular program encourages students to develop mental and physical skills, a healthy competitive spirit, teamwork, and self-discipline.
Quick Facts (2025-26)
- Top Ranked CA School
- Grades: 9-12
- Enrollment: 339 students
- Yearly Tuition: $9,120
- Acceptance rate: 98%
- Average class size: 25 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
Cantwell-Sacred Heart Of Mary ranks among the top 20% of private schools in California for:
Category
Attribute
Student Body
School History
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
Year Founded
1947
Colors
Navy Blue, Gold, Cardinal
Summer School Offered
Yes
School Calendar
Awards
Blue Ribbon School - Selected in n/a
Student Body
Total Students
339 students
Student Body Type
Co-ed
% Students of Color
97%
State avg.: 51%
Students by Grade

Academics and Faculty
Total Classroom Teachers
20 teachers
Student-Teacher Ratio
17:1
National avg.: 13:1
% Faculty w/Advanced Degree
43%
Average Class Size
25 students
Number of AP Courses
8 courses
List of Courses Offered
Advanced Courses
AP BiologyAP Calculus AB
AP Calculus BCAP English Language
AP English LiteratureAP European History
AP Spanish LanguageAP Spanish Literature
AP Studio Art
Classroom Dress Code
Formal
Khaki pants, polo shirt
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
Tuition Notes
Financial Aid is available to those who qualify
% on Financial Aid
55%
Average Financial Aid Grant
$1,200
Acceptance Rate
98%
National avg.: 81%
Admissions Director
Rebecca Velasquez
Admissions Associate
Ms Gabby Ramos (International Students)
Application URL
Sports
Total Sports Offered
9 sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
11 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Art ClubChess Club
Drama ClubEnvironmental Club
Lattes & LiteratureNational Honor Society
Spanish ClubSTEM/NASA Club
Student Council (ASB)Students In Athletics Club
Yearbook
School Notes
- School Motto: Age Cum Anima Christi
- Cantwell-Sacred Heart of Mary is a Catholic coeducational high school whose philosophy and mission is based on the call of the United States Catholic Bishops, "To Teach as Jesus Did." CSHM accepts students on a space available basis. CSHM charges tuition for its educational services. CSHM has admissions requirements pertaining to academic standards, behavior and attendance as determined by the Dean of Admissions and the Principal.
Source: Verified school update
Frequently Asked Questions
How much does Cantwell-Sacred Heart Of Mary cost?
Cantwell-Sacred Heart Of Mary's tuition is approximately $9,120 for private students.
What is the acceptance rate of Cantwell-Sacred Heart Of Mary?
The acceptance rate of Cantwell-Sacred Heart Of Mary is 98%, which is higher than the national average of 80%.
What sports does Cantwell-Sacred Heart Of Mary offer?
Cantwell-Sacred Heart Of Mary offers 9 interscholastic sports: Baseball, Basketball, Cheering, Cross Country, Football, Soccer, Softball, Track and Field and Volleyball.
What is Cantwell-Sacred Heart Of Mary's ranking?
Cantwell-Sacred Heart Of Mary ranks among the top 20% of private schools in California for: Highest percentage of students of color, Largest student body and Oldest founding date.
When is the application deadline for Cantwell-Sacred Heart Of Mary?
The application deadline for Cantwell-Sacred Heart Of Mary is rolling (applications are reviewed as they are received year-round).
In what neighborhood is Cantwell-Sacred Heart Of Mary located?
Cantwell-Sacred Heart Of Mary is located in the South Montebello neighborhood of Montebello, CA. There are 5 other private schools located in South Montebello.
School Reviews
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