[1] He earned his degree (major: physical education, minor: biology) from Wartburg College in 1974.
[2] He then served as head coach at Central Elkader High School in Iowa from 1976 to 1984, assembling a record of 108 wins and 63 losses.
[3] In his 42 seasons as high school head coach, Showalter compiled a record of 601-346, won 16 district titles and guided his teams to six state tournament appearances.
In May 2016, Showalter was named Director of Coach Development of the USA Basketball Youth Division.
[4] He guided the US Under-16 Men's National Team to gold medals at the 2009, 2011, 2013 and 2015 FIBA Americas Championships.