Wilf Cunnington took on several important roles in mathematics education in Ontario during his career. He taught at York Mills C.I. in Toronto and at the University of Toronto Schools.  He also served as a mathematics inspector for the Ontario Department of Education, and as president of O.A.T.M. in 1964-65.
Wilf’s dedication to his profession can be found, too, in the textbooks he wrote for Copp Clark Publishing.