San Dimas High School is a secondary school located in San Dimas, California, in the United States. It is part of the Bonita Unified School District. Most of the students come from Lone Hill Middle School which shares the same city block as the High School.
Serving 1,235 students in grades 9-12, San Dimas High School ranks in the top 20% of all schools in California for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 47% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 75% (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 Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,235 students
- Student-Teacher Ratio: 21:1
- Minority Enrollment: 82%
- Graduation Rate: 94% (Top 30% in CA)
- Overall Testing Rank: Top 20%
- Math Proficiency: 47% (Top 30%)
- Reading Proficiency: 75% (Top 10%)
- Science Proficiency: 28% (Top 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
San Dimas High School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Reading/Language Arts Proficiency
School Overview
San Dimas High School's student population of 1,235 students has declined by 7% over five school years.
The teacher population of 58 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
1,235 students
Total Classroom Teachers
58 teachers
Year Founded
1970
Colors
Blue, Gold
School Calendar
Campus Size
20 acres
School Rankings
San Dimas High School ranks within the top 20% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of San Dimas High School is 0.60, 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
#1514 out of 9523 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
47%
34%
Reading/Language Arts Test Scores (% Proficient)
75%
47%
Science Test Scores (% Proficient)
28%
29%
Student-Teacher Ratio
21:1
21:1
American Indian
n/a
1%
Asian
11%
12%
Hispanic
59%
56%
Black
3%
5%
White
18%
20%
Hawaiian
n/a
n/a
Two or more races
9%
6%
All Ethnic Groups
Graduation Rate
94%
87%
Eligible for Free Lunch
35%
54%
Eligible for Reduced Lunch
3%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Saint
Frequently Asked Questions
What is San Dimas High School's ranking?
San Dimas High School is ranked #1514 out of 9,523 schools, which ranks it among the top 20% of public schools in California.
What schools are San Dimas High School often compared to?
San Dimas High Schoolis often viewed alongside schools like Glendora High School, Bonita High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
47% of students have achieved math proficiency (compared to the 34% CA state average), while 75% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of San Dimas High School?
The graduation rate of San Dimas High School is 94%, which is higher than the California state average of 87%.
How many students attend San Dimas High School?
1,235 students attend San Dimas High School.
What is the racial composition of the student body?
59% of San Dimas High School students are Hispanic, 18% of students are White, 11% of students are Asian, 9% of students are Two or more races, and 3% of students are Black.
What is the student-teacher ratio of San Dimas High School?
San Dimas High School has a student ration of 21:1, which is equal to the California state average of 21:1.
What grades does San Dimas High School offer ?
San Dimas High School offers enrollment in grades 9-12
What school district is San Dimas High School part of?
San Dimas High School is part of Bonita Unified School District.
School Reviews
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