Armstrong Elementary
PublicElementaryGrades K–6
22750 Beaverhead Dr., Diamond Bar, CA 91765 · (909) 397-4563 · Part of Pomona Unified School District
Diamond Bar’s School Grade B+ better than 72% of California school districts
Students
251
Students per teacher
19:1
Free or reduced lunch
67%
Setting
Suburb
Grades
K–6
What stands out about Armstrong Elementary
- Enrollment down 13.7% since 2020–21
- No state test results published for this school
- Next stop for Diamond Bar kids: 3 middle schools
On the path
Where Diamond Bar kids come from and go next. The whole path →
K–6Armstrong ElementaryYou are here
6–83 middle schoolsDepends on your address
Location
Directions ↗22750 Beaverhead Dr., Diamond Bar
Students
Enrollment by grade
Kindergarten67
Grade 131
Grade 235
Grade 331
Grade 437
Grade 526
Grade 624
Enrollment over time
291’20
260’21
257’22
249’23
251’24
Down 13.7% since 2020–21.
Who goes here
Hispanic 60%Asian 15%White 10%Two or more races 9%Black 6%
As reported to NCES, share of students with a reported race or ethnicity.
Parents talk
Questions and answers about Armstrong Elementary from Diamond Bar families.
Other schools in Pomona Unified School District
School facts: U.S. Department of Education (NCES), 2024–2025 school year. Map: © OpenStreetMap contributors.