Scheer was the head baseball coach at Union High School for 25 years. His overall record was 260 wins and 201 losses. During that time, the Union Wildcats won four conference championships, four district championships, two sectional titles, and made one trip to the Final Four. In 1983, the Wildcats finished third at the Missouri State Tournament. Scheer was named the Missourian Coach of the Year in 1992. In 2012, he was inducted into the Missouri High School Baseball Coaches Hall of Fame. Many of the boys he coached at Union High School went on to play college baseball, and one boy played professional baseball. In 1980, Scheer was the assistant baseball coach at East Central College in Union. He coached American Legion baseball in Union. From 1983 to 1994, he was the director of a summer youth baseball clinic in Union. Scheer was a shortstop and first baseman who played for New Haven High School from 1971 to 1974. In 1974, he was named to the All-State team. He played for East Central College from 1974 to 1976. He was a shortstop for Missouri Western State University from 1977 to 1979. Scheer was a member of the Midwest Stars select team in 1975. From 1976 to 1983, he was a shortstop and first baseman for the Washington Buds semi-pro team. Scheer is a charter member of the Missouri High School Baseball Coaches Association. He served as president of that organization from 2009 to 2011. He is currently the All-State Chairman. From 2005 to 2008, Scheer was a vice president of the Missouri High School Baseball Coaches Association. He has served as a district representative, clinic speaker coordinator, all-star game coach, and umpire.