Diamond Bar High School (Ranked Top 10% for 2025)

21400 Pathfinder Rd.
Diamond Bar, CA 91765

( shown in map)

10/

Top 10%

Serving 2,532 students in grades 9-12, Diamond Bar High School ranks in the top 10% of all schools in California for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).

The percentage of students achieving is 70% (which is higher than the California state average of 33%). The percentage of students achieving is 78% (which is higher than the California state average of 47%).

The student:teacher ratio of 25:1 is higher than the California state level of 21:1.

Minority enrollment is 94% of the student body (majority Asian), which is higher than the California state average of 80% (majority Hispanic and Asian).

Quick Stats (2025)

Grades: 9-12
Enrollment: 2,532 students
Student:Teacher Ratio: 25:1
Minority Enrollment: 94%
: 98% (Top 5% in CA)
: Top 10%
: 70% (Top 10%)
: 78% (Top 10%)
: 47% (Top 20%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

<�鶹��ý class="so-dt-title" id="top-rankings">Top Rankings

Diamond Bar High School ranks among the top 20% of public schools in California for:

Category

Attribute

Overall Rank

Highest overall rank (Top 10%)

Math Proficiency

Highest math proficiency (Top 10%)

Reading/Language Arts Proficiency

Highest reading/language arts proficiency (Top 10%)

Science Proficiency

Highest science proficiency (Top 20%)

Graduation Rate

Highest graduation rate (Top 5%)

<�鶹��ý class='so-dt-title' id="overview">School Overview

Diamond Bar High School's student population of 2,532 students has declined by 6% over five school years.

The teacher population of 100 teachers has declined by 7% over five school years.

Awards

Blue Ribbon School - Selected in 2022

Grades Offered

Grades 9-12

Total Students

2,532 students

Gender %

Total Classroom Teachers

100 teachers

This chart displays the total teachers of Diamond Bar High School by year, with the latest 2022-23 school year data.

Students by Grade

This chart displays the students of Diamond Bar High School by grade.

<�鶹��ý class='so-dt-title' id="school-rankings">School Rankings

Diamond Bar High School ranks within the top 10% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).

The of Diamond Bar High School is 0.48, 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.

This School

State Level (CA)

#571 out of 9602 schools
(Top 10%)

This chart displays the overall school rank of Diamond Bar High School, with the latest 2021-22 school year data.

70%

33%

This chart displays the percentage of students that scored at or above 'proficient' levels in Math of Diamond Bar High School and the percentage of public school students that scored at or above 'proficient' levels in Math of public schools in California by year, with the latest 2021-22 school year data.

78%

47%

This chart displays the percentage of students that scored at or above 'proficient' levels in Reading/Language Arts of Diamond Bar High School and the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of California by year, with the latest 2021-22 school year data.

47%

29%

Student : Teacher Ratio

25:1

21:1

This chart displays the student teacher ratio of Diamond Bar High School and the public school average student teacher ratio of California by year, with the latest 2022-23 school year data.

American Indian

n/a

Asian

70%

12%

This chart displays the percentage of Asian students in Diamond Bar High School and the percentage of Asian public school students in California by year, with the latest 2022-23 school year data.

Hispanic

18%

56%

This chart displays the percentage of Hispanic students in Diamond Bar High School and the percentage of Hispanic public school students in California by year, with the latest 2022-23 school year data.

Black

White

20%

Hawaiian

n/a

Two or more races

All Ethnic Groups

0.48

0.63

This chart displays the diversity score of Diamond Bar High School and the public school average diversity score of California by year, with the latest 2022-23 school year data.

98%

87%

This chart displays graduation rate of Diamond Bar High School and public school graduation rate of California by year, with the latest 2021-22 school year data.

Eligible for

22%

54%

Eligible for

School Statewide Testing

School District Name

Walnut Valley Unified School District

Source: National Center for Education Statistics (NCES), CA Dept. of Education

Profile last updated: 02/09/2025

REQUEST FREE INFORMATION

<�鶹��ý class='so-dt-title' id='faq'>Frequently Asked Questions

What is Diamond Bar High School's ranking?

Diamond Bar High School is ranked #571 out of 9,602 schools, which ranks it among the top 10% of public schools in California.

What schools are Diamond Bar High School often compared to?

Diamond Bar High Schoolis often viewed alongside schools like Walnut High School, Diamond Ranch High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

70% of students have achieved math proficiency (compared to the 33% CA state average), while 78% of students have achieved reading proficiency (compared to the 47% CA state average).

What is the graduation rate of Diamond Bar High School?

The graduation rate of Diamond Bar High School is 98%, which is higher than the California state average of 87%.

How many students attend Diamond Bar High School?

2,532 students attend Diamond Bar High School.

What is the racial composition of the student body?

70% of Diamond Bar High School students are Asian, 18% of students are Hispanic, 6% of students are White, 4% of students are Two or more races, and 2% of students are Black.

What is the student:teacher ratio of Diamond Bar High School?

Diamond Bar High School has a student ration of 25:1, which is higher than the California state average of 21:1.

What grades does Diamond Bar High School offer ?

Diamond Bar High School offers enrollment in grades 9-12

What school district is Diamond Bar High School part of?

Diamond Bar High School is part of Walnut Valley Unified School District.

School Reviews
5 6/30/2018
Performing arts program is amazing. Orchestra is #1 in nation.
- Posted by Student/Alumni - Anoynmous
Review Diamond Bar High School. Reviews should be a few sentences in length. Please include any comments on:
Quality of academic programs, teachers, and facilities
Availability of music, art, sports and other extracurricular activities
I am a:
Name or Alias:
Your review:
Rate this school:

�鶹��ý Articles

February 05, 2025

Understanding the U.S. Department of Education: Structure, Impact, and Evolution

We explore how the Department of Education shapes American education, from its cabinet-level leadership to its impact on millions of students, written for general audiences seeking clarity on this vital institution.

January 31, 2025

Segregation in K-12 Education: Colonial Era

Explore the origins of educational segregation during the colonial era and the differential treatment of Native American, African American, and white students. This article delves into the historical context, policies, and societal attitudes that shaped early education in colonial America, highlighting the disparities and injustices that persisted within the schooling systems of that time.

December 16, 2024

Personalized Learning: Revolutionizing Education for the 21st Century

Explore the revolutionary approach of Personalized Learning in K-12 education. This article discusses the benefits, challenges, and potential of tailoring education to individual student needs, incorporating technology and adaptive learning methods to prepare students for the 21st century.