Welcome to the official Website of The Rock Holiday Classic - Las Vegas. Where 8 Boys High School Basketball teams and 4 Prep School Basketball teams from around the United States come to enjoy the entertaining atmosphere of Las Vegas Nevada and take part in a highly competitive high school basketball tournament. The Henderson International School 1165 Sandy Ridge Avenue Henderson, NV 89052 Ph: (702) 616-3027 Fax: (702) 616-2065