San Marino High School is a public high school in San Marino, California, United States, and the only high school in the San Marino Unified School District, Los Angeles County.
Serving 886 students in grades 9-12, San Marino High School ranks in the top 5% of all schools in California for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 80-84% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 75-79% (which is higher than the California state average of 47%).
The student-teacher ratio of 21:1 is equal to the California state level of 21:1.
Minority enrollment is 82% of the student body (majority Asian), which is higher than the California state average of 80% (majority Hispanic and Asian).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 886 students
- Student-Teacher Ratio: 21:1
- Minority Enrollment: 82%
- Graduation Rate: ≥95% (Top 20% in CA)
- Overall Testing Rank: Top 5%
- Math Proficiency: 80-84% (Top 5%)
- Reading Proficiency: 75-79% (Top 10%)
- Science Proficiency: 63% (Top 10%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
San Marino High School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
San Marino High School's student population of 886 students has declined by 6% over five school years.
The teacher population of 43 teachers has declined by 12% over five school years.
Grades Offered
Grades 9-12
Total Students
886 students
Total Classroom Teachers
43 teachers
Year Founded
1952
Colors
White, Royal blue
Campus Size
50 acres
School Motto
'Our Titans are a shining example of how San Marino High School is preparing our students for present and future success.'
Average Class Size
15 students
School Rankings
San Marino High School ranks within the top 5% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of San Marino High School is 0.58, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#359 out of 9523 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
80-84%
34%
Reading/Language Arts Test Scores (% Proficient)
75-79%
47%
Science Test Scores (% Proficient)
63%
29%
Student-Teacher Ratio
21:1
21:1
American Indian
n/a
1%
Asian
61%
12%
Hispanic
9%
56%
Black
1%
5%
White
18%
20%
Hawaiian
n/a
n/a
Two or more races
11%
6%
All Ethnic Groups
Graduation Rate
≥95%
87%
Eligible for Free Lunch
11%
54%
Eligible for Reduced Lunch (19-20)
1%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Titans
Frequently Asked Questions
What is San Marino High School's ranking?
San Marino High School is ranked #359 out of 9,523 schools, which ranks it among the top 5% of public schools in California.
What schools are San Marino High School often compared to?
San Marino High Schoolis often viewed alongside schools like Arcadia High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
80-84% of students have achieved math proficiency (compared to the 34% CA state average), while 75-79% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of San Marino High School?
The graduation rate of San Marino High School is 95%, which is higher than the California state average of 87%.
How many students attend San Marino High School?
886 students attend San Marino High School.
What is the racial composition of the student body?
61% of San Marino High School students are Asian, 18% of students are White, 11% of students are Two or more races, 9% of students are Hispanic, and 1% of students are Black.
What is the student-teacher ratio of San Marino High School?
San Marino High School has a student ration of 21:1, which is equal to the California state average of 21:1.
What grades does San Marino High School offer ?
San Marino High School offers enrollment in grades 9-12
What school district is San Marino High School part of?
San Marino High School is part of San Marino Unified School District.
School Calendar
View the San Marino High School yearly calendar below. Note key dates such as:
Event
Date
First Day of Students/Welcome
August 12, 2026 (Wednesday)
Thanksgiving Break
November 23, 2026 (Monday)
First Day Back
January 04, 2027 (Monday)
Spring Break
April 05, 2027 (Monday)
First Day of School
August 11, 2027 (Wednesday)
School Reviews
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