“Things that made him an effective dad, also made him an effective educator, and an outstanding coach,” said Aaron McWilliams. A historical event took place for Orestimba High School on Saturday. The purple ribbon was cut, officially dedicating the Orestimba High School as Kerry McWilliams Memorial Gymnasium. Alumni, community members, and family of coach Kerry “Mac” McWilliams were all in attendance to commemorate the special event.