Kendrix is a local product from Willard (Mo.) High who avearged 23.7 points, 7.7 rebounds and 3.6 steals while making 79 percent of his free throws his senior year. He helped Coach Lamont Frazier's Tigers to a 21-7 ledger in 2013-14 en route to a Missouri Class 5 quarterfinal appearance. He was also a consensus all-state pick by the coaches association and sportswriters.
During his junior season, Kendrix registered 20.4 points, 6.7 rebounds and 2.4 steals per night while earning first-team all-state honors from the Missouri Sportswriters and Sportcasters Association as well as All-Central Ozarks Conference and All-District 12 distinction. He was also a starter and second-team all-conference pick as a sophomore for then-coach Dusty Killingsworth. He is a three-star recruit by Rivals.com and played AAU ball for MoKan Elite.