About
United Studios of Self Defense offers kids karate classes, teens karate and self-defense classes, adults Kempo karate classes, and women's self-defense classes. The dojo emphasizes situational awareness, de-escalation, and escape.
Programs
- Kids karate classes — 3.5 - 12
- Teens karate and self-defense classes — 13 - 18
- Adults Kempo karate classes — 16+
- Women's self-defense classes — 16+
At a glance
- Ages: 3–18 years old
- Facility hours: Mon–Thu: 12–7 PM; Fri: 12–6 PM; Saturday 10:00 am - 2:00 pm; Sunday Closed
About the provider
United Studios of Self Defense has been serving San Francisco since 1995. John Collins is the Chief Instructor and a 5th degree black belt, and he has spent more than 30 years training and teaching at the San Francisco dojo.
The dojo emphasizes situational awareness, de-escalation, and escape.
What families say
“Great dojo! Sensei Collins is world class. Our daughter earned her brown belt after years of devoted, supportive coaching. She started a women's self-defense club at her school as a result of this wonderful education @ USSDSF.” — SARAH J.
“It is a great environment for people of all ages, and would highly recommend it to anyone. Sensei Collins is an amazing instructor and really caters to each individual student's specific needs.” — Julian M.
“JT teaches you the skills needed to protect yourself. You’ll be walking out the door feeling more confident and better prepared in defending yourself.” — Edwin A.
Last updated October 20, 2026.
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