United Studios of Self Defense - 4S Ranch

UNLOCK YOUR FULL POTENTIAL

More Than Just Karate

At USSD 4S Ranch, we help students build respect, focus, and self-confidence—on and off the mat.


We teach Shaolin Kempo, the original mixed martial arts system; a dynamic blend of the traditonal Chinese techniques, tae kwon do, aikedo, karate, and kung fu—designed to prepare students for real-world self-defense and life challenges.

Three boys smiling in karate uniforms after class at a martial arts school in 4S Ranch, San Diego, and Rancho Bernardo

WHAT SETS US APART?

USSD 4S Ranch is San Diego County’s only fully personalized, Family First martial arts school.

Every student receives a weekly private lesson from an instructor trained through our two-year education program—ensuring they progress in the way they learn best, with a deeper understanding than ‘group only’ schools can offer.

Our group classes are conveniently scheduled to help busy families stay consistent and continue building focus, resilience, and self-confidence.

We care about more than schedules—your family becomes ours. Join us for a complimentary lesson and experience the difference.

Our Programs

Two children smiling in karate uniforms at a karate school serving 4S Ranch, Rancho Bernardo, and San Diego
Four young kids smiling in karate uniforms at a martial arts class in Rancho Bernardo, San Diego, and 4S Ranch
Adult couple training together in karate class at a dojo in Rancho Bernardo, San Diego, and 4S Ranch

  • As every person is unique, shouldn’t their training be?

    Students in our Dragons, Juniors or Young Adult/Adult program receives one 30-minute Specialized Training Session per week, tailored to their individual learning style. These sessions are flexible, allowing for rescheduling, and they do not expire while enrolled. Students progress at their own rate, not what the ‘group’ is doing, with custom written lesson plans to meet their specific needs.

    Families can choose 1 to 3 group classes per week and can change the days they attend to provide the convenience required to meet every family’s evolving schedules. We even have online group classes available for days you can’t make it in person!

  • Our First Kicks Program is as an Introduction to the Martial Arts designed for 3 to 4 year olds to improve listening skills, focus, coordination, flexibility, muscle tone and self-regulation while learning the basic kicks and strikes of the martial arts.

  • This action packed class provides more detailed self-defense and team building skills, but also assists in the development of social acumen and confidence. Life skills are discussed to allow students to share, learn, grow and overcome the challenges faced at their age, together. Complimented by their Specialized Training Session, we can address specific needs as requested by their parent.

  • Understanding that these can be challenging years, students focus goal setting, responsibility, discipline in life, and spending less time on electronics! Time to encourage your Junior to stay active and improve their mind, body and spirit in only the way the martial arts can!

  • It’s never too late to start training! Though it can be intimidating starting the martial arts when older, our goal is to make you feel comfortable and confident; meeting you where you’re at so you can reduce stress, stay healthy and meet personal, work and school goals. All exercises and techniques are amended based upon your physical needs. The only limits are the ones you place on yourself because we’ve got you covered!

  • Our fully personalized kick boxing program instructs students to utilize the basics of Kempo and Muay Thai through bag and partner work to develop their skill at the pace that works best for them while understanding the practical application of self defense. Its a great way to learn while you burn and get fit fast!

  • Aspiring to become a black belt may not be for everyone, but learning self defense is! We provide one on one private self-defense lessons that can be scheduled at a time that works best for you!

  • Whether it be karate, self defense lessons, and even Muay Thai kick boxing, our school has no boundaries; providing online training to students all over the country, taught by separate instructors experienced in distance training! Online group classes are available for our traditional program as well!