ビッグ・ジョン・スタッド
After his WWWF retirement in 1977, Kowalski started a professional wrestling school in Malden, Massachusetts. Due to his health, he ceased to be involved with it in 2003, and the school subsequently moved to North Andover, Massachusetts. Among the alumni of this school are Triple H, Chyna, Perry Saturn, John Kronus, Brittany Brown, Big John Studd, Damien Kane, Killer Kowalski Jr., Ron Zombie, Christopher Nowinski, Matt Bloom, April Hunter, Ace Andrews, RJ Brewer, Kazarian, Nicole Raczynski, Cadillac Joe D, Kenny Dykstra, Tommaso Ciampa, Damien Sandow and Fandango.