At Hardin-Simmons University, Larry played guard in 1960 and 1961. He served as class vice-president (as a sophomore), president of Cowboys for Christ, and president of the Letterman Club. It was after his playing days at HSU that Larry made his mark as a high school coach at Amarillo High School. He has been at AHS since 1975, and also served as an assistant at Corpus Christi Carroll, Victoria, Stamford, and Hereford High Shcools with his debut as head coach at Hereford. As a coach he has a 237-127-6 record and has won 15 district championships. His teams have made 27 playoff appearances. He has won numerous coaching awards including district coach of the year 12 times. Panhandle coach of the year four times, the Tom Landry Award, and the High School Extra "Coach Who Makes a Difference" award. Dippel is a member of the Texas High School Football Hall of Fame and has served as president of the Texas High School Coaches Association. He has served as coach of the Oil Bowl all-star game between Oklahoma and Texas.