Stew was a three-time All-American selection at Syracuse University in 1954, 1955, and 1956. He was also a North/South All-Star selection in 1956. At the time of his induction, he held the scoring records for most goals in a game, season, and career at Syracuse University, Phillips Exeter, and Connecticut Valley L.C. He was chosen a club all star in 1968 and 1972. He started lacrosse at the Chesire Academy and was head coach for seven years, and also coached four high school championships at the Kinsgwood-Oxford School. He was chairman of the USLCA Secondary Schools Committee and Secondary Schools All-American Committee. Stew also served on the USLCA Executive Board.