Armstrong Elementary School Diamond Bar Overview &amp; Info (2026 List)

About Armstrong Elementary

Armstrong Elementary School, located at 22750 Beaverhead Dr., Diamond Bar, CA 91765, is part of the Pomona Unified School District. It has a total enrollment of 249 students, based on the most current reporting. It has a student population ranging from kindergarten to grade 6. The student-teacher ratio is approximately 21:1. The student population consists of approximately 59% male and 41% female. According to the assessment, the school's math performance is approximately 42%, and the reading performance is approximately 52%. It is a standard school within the district structure, which consists of multiple schools. This school, as part of the public school system, utilizes a boundary system based on the local school zones. The local homes in the area around the school tend to be priced around $900,000. When comparing this school to other local schools within the same district, the school's performance rating would be mid-range within the local Diamond Bar school system, making it a top elementary school in California option for families seeking balanced academic environments.

Academic Performance

Subject Proficiency

Mathematics 42%

Reading 52%

State average proficiency is 42% in Math and 52% in Reading.

12

Full-time Teachers

21 : 1

Student-Teacher Ratio

2

Teachers In First Or Second Year (yrs)

249

Total Students

$58409

Avg. Teacher Salary

Student Demographics

White 9.64%

Asian 14.46%

Hispanic 60.64%

Black 5.62%

Two+ Races 9.64%

Native Am. 0%

White

9.64%

Asian

14.46%

Hispanic

60.64%

Black

5.62%

Two+ Races

9.64%

Native Am.

0%

Gender Distribution

Total Students: 249

41.37%

103 Female

58.63%

146 Male

Student Population

249 Students

With a student-teacher ratio of 21 : 1

Minority Enrollment

25%

Percentage of minority students

Students per Counselor

249 : 1

Student to counselor ratio

Armstrong Elementary Contact Information

Address

22750 Beaverhead Dr., Diamond Bar, CA, 91765

View on Map

Phone

(909) 397-4563

Call Now

Website

http://www.pusd.org

Recent News & Updates

New Playground Name

We are so excited to announce the name of our new playground! Following a school-wide and Robinson community vote we narrowed a large list of names down to four. Since our students will be using the playground on a daily basis, we gave them the final vote! 476.....

School Timings

Regular School Hours

All Grades: 8:00 AM to 2:25 PM

Early Dismissal Days

Dismissal Time: 12:15 PM

Note: Doors open at 7:45 AM for student arrival. Please refer to the school calendar for specific early dismissal dates.

After School Activities

Information coming soon

School Session Dates

September to June

School session starts in September 1st week and ends in June 3rd week. For exact dates, please contact the school.

Remarkable Alumni

Being Updated

Map

Latest News

Families of Armstrong Elementary School, Diamond Bar, are cordially invited to the 19th Annual Family Learning Conference: Tapestry of Arts on April 25, 2026, at the University of La Verne, and a Health and Wellness Fair on the same date from 10:00 a.m. to 2:00 p.m.

FAQ

Q1. Does Armstrong Elementary offer after-school programs?

Ans. Yes, the school does offer after-school activities, which can vary depending on the academic year.

Q2. What modes of transport are available for the students?

Ans. The modes of transport available can vary, but most students commute from home or through school buses, depending on the school.

Q3. Are there any opportunities for parent involvement?

Ans. Yes, parents can get involved in the school through the parent-teacher organizations and the school events held during the year.

Q4. Does the school offer any meals?

Ans. Yes, the school does offer meals as part of the school meal programs, which include breakfast and lunch.

Q5. What are the safety arrangements made?

Ans. The school maintains the same safety arrangements as the school district.

Games & Extracurricular Activities

Sports

Soccer Club Grades 1-3 | Mon/Wed 3:30-4:30pm
Basketball Grades 2-4 | Tue/Thu 3:30-4:45pm
Track & Field Grades 3-5 | Fri 3:30-5:00pm

Arts

Art Club Grades K-2 | Mon 3:00-4:00pm
Drama Club Grades 3-5 | Wed 3:30-5:00pm
Choir Grades 2-5 | Thu 3:15-4:15pm

Clubs

Chess Club Grades 2-5 | Fri 3:15-4:15pm
Garden Club All Grades | Tue 3:15-4:00pm
Robotics Club Grades 3-5 | Thu 3:30-5:00pm

Note: Schedules may change during school holidays. Please contact School for exact Schedule.

Summer Suggested Reading

Horn Book Selections

Vocabulary.com +3 Horn Book +3 What to Read to Your Kids +3

ML

Maggie Lou, Firefox

by Arnolda Dufour Bowes

PS

The Puppets of Spelhorst

by Kate DiCamillo

MLV

The Mona Lisa Vanishes

by Nicholas Day

Vocabulary.com Top Picks

Penguin Random House +10 Vocabulary.com +10 Wikipedia +10

F

Frindle

by Andrew Clements

WR

The Wild Robot

by Peter Brown

JGP

James and the Giant Peach

by Roald Dahl

Penguin Random House Features

Horn Book +2 Penguin Random House +2 The Guardian +2

SLB

The Secret Language of Birds

by Lynne Kelly

S

The Swifts: A Dictionary of Scoundrels

by Beth Lincoln

Free Robotics and Stem In-person Workshop in Your Neighbourhood for 7-14 Years Tech Enthusiasts.

Local kids are transforming ideas into real-world.

See the projects happening right in your neighborhood

What Parents Say