Trainor helped lead Springdale (Ark.) Har-Ber High School to a pair of Class 7A state runner-up finishes as a junior and senior, earning a spot on the all-state tournament team in both seasons. Following a senior campaign with 325 kills and 116 digs, she was named an Under Armour All-American Honorable Mention performer. Representing Har-Ber in the Arkansas High School Coaches Association All-Star Game, Trainor was named the game’s MVP with 17 kills and eight digs. She played club with Ozark Juniors and was a four-time national qualifier. Adding to her volleyball prowess, Trainor broke four school track and field records and was a three-time state champion (2009-11) gymnast.
Klaire is the daughter of Kendall Trainor and Kerri Trainor Mason, and stepfather Kent Mason with siblings Joey, Kenley, Caitlin, Sarah and John. Her father was a 1988 All-American place kicker for the Arkansas football team and also a member of the Arkansas baseball team, and her mother was a women’s basketball student-athlete at Ottawa (Kan.) University. Trainor will be an art major at Arkansas.