The senior attackman from Penn Yan had a stellar history with the Mustangs, starting in the ninth grade when he recorded his first assist in and outbracket sectional game. Four years later he finished with 113g-119a (232 points).

As a sophomore Maciejewski was named to the Class C All-Tournament team. He repeated the honor as a junior and was also named to the second team All-Section Five list. As a senior he repeated the All-Section honor and was named the Class C All Tournament MVP.

Off season he played on the 2012 Nike Rising Senior team, and then played for the SweetLax Club team in the Tri-State, Yale Bulldog Classic, the Summer Slam, the John Pepper and the UpLax fall tournament.