Kumon Math and Reading Center of Diamond Bar

My child has been attending this Kumon for over one year and has made significant progress in both English and Math. More importantly, he's developed strong study habits and a real love for...

My daughter Bianca has gained a lot here, and she has greatly improved her reading and mathematics. The instructor Mariko is a very kind person, she gives me many good suggestions.

My son has been attending this center since elementary school, and by the time he entered high school, he had already completed the entire high school math curriculum. I truly believe this was...

Dont try to send kids to here.!!! This owner had a very bad attituded to customers or kids. She wont refunds or prorations if her office CLOSED for office meeting. She owned a Chino hills and...

What a nightmare! Terrible customer service. I've been trying to schedule a simple assessment (required by the center before signing up for classes) for the last two weeks. I've called many times...