Best Public Middle Schools in Diamond Bar, CA (2025-26)

Best Diamond Bar Public Middle Schools (2025-26)

For the 2025-26 school year, there are 2 public middle schools serving 1,880 students in Diamond Bar, CA. The top ranked public middle schools in Diamond Bar, CA are Chaparral Middle School and Lorbeer Middle School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Diamond Bar, CA public middle schools have an score of 57% (versus the California public middle school average of 32%), and score of 70% (versus the 46% statewide average). Middle schools in Diamond Bar have an average ranking of 10/10, which is in the top 10% of California public middle schools.

Minority enrollment is 95% of the student body (majority Asian), which is more than the California public middle school average of 78% (majority Hispanic).

Best Public Middle Schools in Diamond Bar, CA (2025-26)

School
(Math and Reading Proficiency)

Location

Quick Facts

Rank: #11.

Chaparral Middle School

(Math: 74% | Reading: 80%)
:

10/

Top 5%

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1405 South Spruce Tree Dr.
Diamond Bar, CA 91765
(909) 861-6227

Gr: 6-8 | 1,204 student Student-teacher ratio: 26:1 Minority enrollment: 95%

Rank: #22.

Lorbeer Middle School

(Math: 26% | Reading: 52%)
:

Top 50%

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501 Diamond Bar Blvd.
Diamond Bar, CA 91765
(909) 397-4527

Gr: 7-8 | 676 students Student-teacher ratio: 23:1 Minority enrollment: 96%

Frequently Asked Questions

What are the top ranked public middle schools in Diamond Bar, CA?

The top ranked public middle schools in Diamond Bar, CA include Chaparral Middle School and Lorbeer Middle School. Diamond Bar has one of the highest concentrations of top ranked public schools in California.

How many public middle schools are located in Diamond Bar?

2 public middle schools are located in Diamond Bar.

What is the racial composition of students in Diamond Bar?

Diamond Bar public middle schools minority enrollment is 95% of the student body (majority Asian), which is more than the California public middle schools average of 78% (majority Hispanic).