In 1920, Dvorak moved to Seattle, Washington, where he was hired as the coach of all athletic teams at Franklin High School. He was the football coach at Franklin in 1920 and 1921. At Franklin, Dvorak coached African-American athlete Brice Taylor, who went on to become an All-American football player at the University of Southern California. A report on Dvorak in December 1921 noted: "He is coaching the Franklin High School football team and is very much of a success at it. He is very much admired by pupils and associates."
