Three eighth-graders from Tuba City Junior High School joined more than 1,000 students from across the state of Arizona to compete in the Arizona Science and Engineering Fair where 743 projects were judged April 4-5 at the Phoenix Convention Center.Three eighth-graders from Tuba City Junior High School joined more than 1,000 students from across the state of Arizona to compete in the Arizona Science and Engineering Fair where 743 projects were judged April 4-5 at the Phoenix Convention Center.