His coaching career started at Fife High School. as he returned to the state of Washington. He was with the Trojans from 1958 to 1963.
Pepple would then coach at Meadowdale (1964-66) and Mark Morris (1967-68) before finding his permanent home at Mercer Island. His run with the Islanders is something that isn’t seen in modern times. He would finish with 4 State Titles, 4 2nds, 4 3rds, 3 4ths, 2 6ths, 1 7th and 1 8th place trophy. The only one he didn’t win was a 5th place trophy at Mercer Island. He took the Islanders to the trophy round at State 19 times and 12 of those he finished in the top 3 meaning when Pepple had a team in the tournament they were very likely a team you didn’t want to face. The all-time winningest coach in the history of boys basketball in the state of Washington with a lifetime record of 952-306) achieved over 49 years (42 at Mercer Island), this was only part of what Coach Pepple will be remembered for. Coach sent over 80 players to numerous colleges and universities at all levels and has a far reaching coaching tree that extends all over the country and also into the NBA. Pepple coached an All-American game, was league and state coach of the year numerous times, averaged two players advancing into the college ranks for every season and is a member of three separate Halls of Fame.
