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Chapter

Armstrong Elementary

Diamond Bar, CA

PublicElementary · Grades K–6
pusd.org22750 Beaverhead Dr., Diamond Bar, CA 91765(909) 397-4563
Test scores
California state tests, 2024–25

English language arts

116 students tested

47.4% met or exceeded the standard. In 2023–24, 50.4% did.

  • Exceeded25.0%
  • Met22.4%
  • Nearly met23.3%
  • Not met29.3%

Math

116 students tested

29.3% met or exceeded the standard. In 2023–24, 40.9% did.

  • Exceeded11.2%
  • Met18.1%
  • Nearly met31.9%
  • Not met38.8%
Discipline
State and federal reports

California Department of Education

1.8% of students were suspended at least once in 2024–25.

Measure2023–242024–25
Enrolled during the year267271
Suspended in or out of school1.9% · 51.8% · 5
Suspensions66
Violence with injury54
Violence without injury12
Weapons00
Drugs00
Defiance only00
Other00

Each suspension is listed under its most serious offense.

U.S. Department of Education

Measure2021–222023–24
Enrolled in the fall251238
Suspended out of school0.4% · 12.9% · 7
Suspended in school0.0% · 00.4% · 1
Expelled0.0% · 00.0% · 0
Attendance
California Department of Education

21.3% of students were chronically absent in 2024–25.

Measure2023–242024–25
Students counted264258
Chronically absent24.6% · 6521.3% · 55

Chronically absent means missing 10% or more of the school days a student was enrolled.

School Profile

Location

Suburb, Large

Enrollment

249 students

Student-Teacher Ratio

21:1

Demographics
Hispanic/Latino60.6%
x
White9.6%
x
Black or African American5.6%
x
Asian14.5%
x
Two or More Races9.6%
x
American Indian or Alaska Native0.0%
x
Native Hawaiian or Pacific Islander0.0%
x
Public school directory

NCES ID 063132004836

District
Pomona Unified
Status
Open
School category
Regular School
Charter
No
Virtual instruction
No virtual instruction
Enrollment
249 students
Teachers (FTE)
12

Sources