Arn Harris likes to say he has “survived” a lot of changes in education in Ontario during his career: the Hope Commission, the Porter Plan and the Roberts Plan, to name a few.    
Arn’s teaching career began at Lawrence Park C.I. in Toronto. He went on to become department head and vice-principal at Kirkland Lake C.V.I., before moving to London. There he taught at Central C.I. and then helped to open G.A. Wheable C.V.I. where he headed up the mathematics department, was vice-principal and acting principal.
Arn was the first mathematics head at Althouse College at the University of Western Ontario and was a mathematics inspector for the Ontario Department of Education. While at Althouse he played an active role in helping to develop the joint Co-operative Mathematics Teaching Program with the University of Waterloo. He was also the editor of the O.A.M.E. Gazette and is a past president of S.W.O.A.M.E.
Arn grew up in Middlesex County and went to high school in Strathroy. He got his university education at the University of Western Ontario and at the University of London. He returned to his rural roots after retirement, indulging his interest in farming. He’s also quite active in his church and is a big fan of mystery novels.