Welcome to Mathnasium of Diamond Bar

My son has truly improved in his class work. He has really grown in a matter of months. Thank you Mathnasium!

Cressida Nwana

Raven is amazing! She is patient, kind, and brings out the best in her students! My son has grown and developm...

Reshma Mittal
mobile version of sandcastle image

Summer Programs

Make Mathnasium Part of Your Summer Plans.

Schedule A Free Assessment Today!

Schedule Free Assessment

Contact us

Diamond Bar

  • 2020 S. Brea Canyon Rd., #A3
  • Diamond Bar, CA 91765
  • Call (909) 860-3781

Hours of Operation

Instructional Hours

Mon - Thu 2:00PM - 7:00PM
Sat 11:00AM - 3:00PM

Office Hours

Mon - Thu
12:00PM - 7:00PM
11:00AM - 3:00PM
View All Hours arrow

Already enrolled?

Log in

Hello. I’m Raven, Center Director of Mathnasium of Diamond Bar, your neighborhood math-only learning center. We help kids in grades K-12 understand math by teaching in a way that makes sense to them.

We specialize in math-only instruction with a focused, caring, and fun learning approach that delivers results.
We proudly serve local communities and schools, including:

  • Diamond Bar
  • Castle Rock Elementary School
  • Evergreen Elementary School
  • Walnut Elementary School
  • Maple Hill Elementary School
  • Chaparral Middle School
  • Quail Summit Elementary School



One-on-One Assessment

Our unique assessment pinpoints what each child already knows and what they still need to learn.


Customized Learning Plan & Goals

Our detailed plan takes your child step-by-step from where they are to where they need to go.


The Mathnasium Method™

Our proprietary curriculum and teaching method fosters skills that take hold and build upon one another.

Latest News & Posts

Fourth of July Holiday Closure Notice

Jul 2, 2019 | Diamond Bar

Dear Mathnasium Parents,   Mathnasium of Diamond Bar will be closed Thursday, July 4th, in observance of Independence Day. We will resume our normal business hours on Saturday, July 6th.    We hope you enjoy your time off! We lo..

June News at Mathnasium of Diamond Bar!

Jun 4, 2019 | Diamond Bar

When you're part of the Mathnasium family you know that summer fun and improved math skills go together like peanut butter and jelly! We know how to make these weeks away from school the perfect blend of fun and productivity, so that your child is con..

Upcoming Events

June Fun At Mathnasium!
May 10, 2024 - Jun 30, 2024
Make It A Mathnasium Summer!
May 10, 2024 - Aug 31, 2024
More Events brn

Find out how Mathnasium will work for your child

Answer a few questions to learn more

My child is...


Have questions? Contact us.

By clicking "Submit," you agree to receive recurring advertising emails, text messages and calls from Mathnasium and its independently owned learning centers about our offerings to the phone number/email provided above, including calls and texts placed using an automatic telephone dialing system. Consent to receive advertising text messages and calls is not required to purchase goods or services. Message frequency varies. Message and data rates may apply. Reply STOP to no longer receive messages. Email [email protected] for assistance. By clicking "Submit," you also consent to Mathnasium's Terms and Conditions of Use and Privacy Policy.

"The director is great! Responds promptly and attentive to your needs. "

— K.K.

Diamond Bar

2020 S. Brea Canyon Rd., #A3

Diamond Bar, CA 91765

United States