Diamond Bar High
2,557
Students
26.6:1
S:T Ratio
School Snapshot
Key metrics at a glanceAvg SAT Scoreout of 1600
1,300
A
Excellent
Avg ACT Scoreout of 36
28
A
Excellent
AP Coursescourses offered
26
A+
Excellent
AP Enrollmentof students
46%
B-
Excellent
Student-Teacher Ratiostudents per teacher
27:1
C
Below Avg
Graduation Rate
98%
A+
Excellent
This Week at Diamond Bar High – April 9, 2026
338 students practicing on Varsity Tutors
Academic Resources
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School Details
Address
21400 Pathfinder Rd., Diamond Bar, CA 91765
Phone
(909)594-1405
Website
Visit Website
District
Walnut Valley Unified School District
Academic Calendar
2025-2026
Important dates, holidays, and school events