 Before his senior season, Maiava nearly transferred to Kahuku High School on the island of Oahu, where his uncle was an assistant coach, to get more attention at a program known for its NFL alumni; however, his strong performance in football camps on the mainland influenced him to remain at Baldwin.His senior year, he had 147 tackles, 39 tackles for loss, 8 sacks, 8 forced fumbles and 5 blocked kicks, as well as a punt return for a TD.As a student, he achieved a 3.6 grade point average and an SAT score of 1010 (old scoring system).