About Keystone Education (formerly ACI Diamond Bar)
Founded in 1995, Keystone Education is an educational center with an unwavering commitment to providing students the tools, values, and resources they need to achieve academic excellence. With trained eyes and compassionate hearts, the dedicated staff, counselors, and teachers nurture the dreams, intellectual curiosity, and goals of all who enroll. The classroom environment is educational yet fun, motivating students to excel in school. Keystone is an amazing place to learn and grow as a person. The directors, teachers, and everyone involved have helped students learn for nearly a decade, fostering their intellectual growth along with their social and emotional development. The center offers a great environment filled with wonderful and kind staff who care about the students' growth and provide all the resources needed to succeed, as long as the students put in the work. Keystone has also assisted students with college applications, helping them assemble portfolios, perfect essays, and put their best foot forward. Many students have expressed their gratitude for the center, crediting it for their admission into their dream colleges. Keystone welcomes students of all ages, with programs available for kids as young as early elementary, where they learn essential skills like phonics, grammar, and reading/writing. The center also offers dedicated SAT and ACT Prep, as well as private college application sessions, making it a great place for students to start their educational journey.
My daughter scheduled for the June exam and we have contract with Keystone Education for three intensive SAT sessions on Saturday that leads up to the test date. Her SAT scores increased 160 points. That is a big jump just three sessions. If I ever need, I will come back to this place for help :).
April 2025
Keystone is amazing, I have a great experience here. I'm so grateful for them. They helped me grow into the better vision of myself.
July 2023
Great environment to learn filled with wonderful and kind staff that care about your growth. They provide all the resources you need to succeed as long as you put in work from your own end.
