Margo Johnston has been an enthusiastic contributor both to community causes and educational concerns. She has been an executive on the Board of Directors of the Kingston YM-YWCA, the Central Ontario Squash Association and the Ontario Ladies Golf Association (Kingston District).  She has been a fundraiser for the Kingston Township Minor Hockey Association.
In addition to all that, Margo has worked with O.A.M.E., a provincial calculus review team, and the Canadian Mathematics Competition organizers.
Margo grew up in Glengarry County, Ontario, attending S.S. No. 6 Charlottenburg and Williamstown D.H.S.  Her university degree is from Queens University.  She taught at two high schools: Woodroffe H.S. in Ottawa and Frontenac S.S. in Kingston, where she was department head.