Clarksville's Traditional Shotokan Karate Headquarters. (Japan Karate Association) (JKA) (ITKF) and (USKF) Formal classes 2-3 per week $99 per month/ No Long Term Contract ( Children and Adult ) Our family business began over 40 years ago and was Clarksville's 1st martial arts school. While many have come and gone our unique teaching methods and system are next to none.