What grades does Diamond Bar High serve?

Diamond Bar High is a High school serving students in Diamond Bar, CA. The school is part of the local school district.

Where is Diamond Bar High located?

Diamond Bar High is located at Diamond Bar, CA in a urban area.

What is the student-teacher ratio at Diamond Bar High?

Diamond Bar High has a student-teacher ratio of 25.6:1.

What schools are in Diamond Bar, CA?

Diamond Bar, CA is served by the local school district. Diamond Bar High is one of the High schools in the area.

CAHighCalendar available · 27 events · Auto-updating

Diamond Bar High — School Profile & District Info

High|Diamond Bar, California|Walnut Valley Unified

Diamond Bar, CA 91765

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Upcoming Events

Aug

Mon

Minimum DayEvent

Minimum Day - Walnut Valley Unified School District

Aug

Mon

First Day of SchoolEvent

Confirm bus route and pickup time. Early dismissal may apply.

Sep

Mon

Labor DayHoliday

Banks, government offices, and schools may be closed.

Nov

Wed

Veterans DayEvent

No School - Walnut Valley Unified School District

Nov

Mon

Thanksgiving BreakBreak

Banks, government offices, and schools may be closed.

Nov

Thu

Thanksgiving DayHoliday

Banks, government offices, and schools may be closed.

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School Profile

Grades

9–12

Enrollment

2,532

Student:Teacher

25.6:1

Locale

Suburban

District

Walnut Valley Unified

Econ. Disadvantaged

23.2%

Phone

(909)594-1405

School Statistics

Academics (SY 2020-21)

ELA Proficiency

79%

92th percentile in CA

Math Proficiency

77%

96th percentile in CA

Graduation Rate

98%

Programs & Activities (SY 2021-22)

AP Program

26 courses offered

Gifted & Talented

Athletics

20 sports offered

Student-Teacher Ratio: 25.8:1

Worse than average in CA

District Finance (FY 2023)

Per-Pupil Spending

$13,971

District-level data

Funding Sources

Federal 5%State 62%Local 33%

Community Context

Median Home Value

$954,296

-0.8% YoY

Los Angeles, CA metro area · Zillow Feb 2026

Community Need Level

Elevated

CDC/ATSDR Social Vulnerability Index 2022

Enrollment Trend (2014-2025)

2,563

Current enrollment

Stable(-2% 5yr)

Coming Up

Mon, Aug 10, 2026

Minimum Day

Event

Mon, Aug 10, 2026

First Day of School

Event

Mon, Sep 7, 2026

Labor Day

Holiday

Full School Calendar 2026-27

Date	Event	Type	Level
Mon, Sep 7, 2026	Labor Day No School - Walnut Valley Unified School District	Holiday	—
Wed, Nov 11, 2026	Veterans Day No School - Walnut Valley Unified School District	Event	—
Mon, Nov 23, 2026	Thanksgiving Break Thanksgiving Break - Walnut Valley Unified School District	Break	—
Thu, Nov 26, 2026	Thanksgiving Day No School - Walnut Valley Unified School District	Holiday	—
Thu, Dec 17, 2026	Minimum Day Minimum Day - Walnut Valley Unified School District	Event	—
Fri, Dec 18, 2026	Winter Break Winter Break - Walnut Valley Unified School District	Break	—
Fri, Dec 25, 2026	Christmas Day No School - Walnut Valley Unified School District	Holiday	—
Fri, Jan 1, 2027	New Year's Day No School - Walnut Valley Unified School District	Event	—
Mon, Jan 18, 2027	Martin Luther King Jr. Day No School - Walnut Valley Unified School District	Event	—
Mon, Feb 15, 2027	Presidents' Day No School - Walnut Valley Unified School District	Event	—
Fri, Mar 26, 2027	Spring Break Spring Break - Walnut Valley Unified School District	Break	—
Thu, May 27, 2027	Last Day of School Last Day of School - Walnut Valley Unified School District	Event	—
Thu, May 27, 2027	Minimum Day Minimum Day - Walnut Valley Unified School District	Event	—