Castro Sport Karate is a martial arts school that has been serving the Tracy community since 2006.  Under the direction of World Sport Karate Champion, Julio Castro, it is C.S.K.'s mission to invest in the future of Tracy's youth through martial arts.  With an emphasis on self-defense, self-discipline and the development of positive life stills, C.S.K. is devoted to molding tomorrow's champions from the inside out.