Meet Our Instructors

Our Senseis are all Black Belts in one or more disciplines

Our professional sensei’s are the best in the industry. They are extremely well trained and continually update themselves on the latest techniques. They genuinely have a passion for training students of all ages.

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Sensei Andy Clark

My name is Sensei Andrew Clark. I am the Chief Instructor/Owner here at RSM Karate. I’ve been training in Martial Arts for almost 25 years combined, and a 3rd Degree Black Belt in Shaolin Kempo. Prior to becoming a Professional Martial Arts instructor, I served 4 years of Active Duty Military and 2 Deployments coming out of High School. I was born in San Clemente and grew up playing sports, camping, and boating. My wife of 13 years is a Graduate of Santa Margarita High School & University of San Diego, where she majored in Marketing & Communications. We have a 12 yr old son and 10 yr old daughter who are both themselves active in Martial Arts and Sports. My love and passion for Martial Arts and Self Defense is as strong as the 1st day I set foot in a Dojo and look forward to creating that same experience with you and your Family!

Sensei Nathaniel Schmahl
My name is Nathaniel Schmahl and i have been training in martial arts on and off for about 14 years. I have been teaching for 4 years. I have been interested in martial arts since i can remember from cartoons and video games to UFC and boxing Passion for martial arts soon took a different purpose one for inspiring and helping others. It has been an honor to help students not only navigate martial arts but their daily lives. My instructor Matt Shapiro has been a key influence throughout my life and I look to be that for future generations.

What some of our students and their parents say about us

"My kids have grown so much since joining United Self Defense Academy. The instructors are patient, encouraging, and truly care about every student. We've seen a real boost of confidence both on and off the mat. We couldn't be happier!"

– Rehaan Whitfield

"From the moment my child walked through the door, they felt welcome. The program has built real discipline and confidence in ways I have never expected. Watching them earn each belt has been one of our family's favorite experiences together."

– William Haines

"The transformation we have seen in our son has been incredible. He is more focused, more respectful, and more confident than ever before. The instructors here genuinely invest in every student and it shows in everything they do."

– Igor Landry