Chacon spent three years at Crown Point High School where she amassed 1,105 digs (3.25 digs/set), 940 kills (2.76 kills/set), 150 service aces and 133 blocks. She concluded her senior season by earning four major honors including First Team All-State, Defensive Player of the Year, Server of the Year and All-Conference (Duneland).
A 5-9 outside hitter, She enjoyed her third straight 300-kill season as she posted 303 strikes (2.40 kills/set) as a senior. She made her defensive presence felt for the Bulldogs with 40 blocks (35 solo blocks) and a single-season career-high 425 digs (3.37 digs/set). Chacon enjoyed a resurgence in her serve game, recording 55 service aces—one off her single-season high (56) set as a sophomore.
Alaina and her sister Madison combined for 802 of the Bulldogs’ 1,152 kills in 2016, finishing 1-2 in kills. Under head coach Alison Duncan, Crown Point finished 36-4 overall, capping off a perfect 12-0 season at home, ranking third among teams in the state of Indiana and 49th nationally according to maxpreps.com. The Bulldogs were runners-up at in the Indiana High School Athletic Association 4A State Championship after suffering a 3-1 setback to Cathedral in their first appearance in the finals in program history.