Train with Purpose Every class run by our skilled instructing team is taught with clarity and intention. We believe that the martial arts is the perfect vehicle for self improvement. With our combination of personal and group instruction you'll feel yourself growing on your first class. Community‑Driven Dojo Culture For more than 30 years we've been the go-to studio for Karate in Yorba Linda, the Canyon Communities, and the rest of North Orange County. ‍ When you start training with USSD Yorba Linda, you gain a community of like-minded people to support your journey in the martial arts— and in life.