Experience one month of group and private instruction (for one person). The certificate includes a uniform, manual, one private lesson per week, and open group classes for a month. United Studios of Self Defense is the largest martial arts school in North America. Since 1968, its students have studied USSD’s unique system of Kempo-style martial arts from the finest instructors in the United States. For nearly 2,000 years, the martial arts have been steeped in tradition, and you'll feel that sense of rich history at a USSD studio.