Patti MacNicol received a Bachelor of Commerce from the University of Toronto and is a CPA, CA. From 1979 to 1994, Patti practiced public accounting with Clarkson Gordon/Ernst & Young and worked on the regulatory side of the profession with the Ontario Institute of Chartered Accountants.

For the past 28 years Patti was the Vice-Principal Administration/Finance at Upper Canada College in Toronto. In addition, she served as Secretary to the College’s Board of Governors and Treasurer of the three Foundations. Prior to her time at UCC, Patti spent four years in a similar role at Branksome Hall

Patti retired from UCC in December 2025 and is now working with the Canadian Accredited Independent Schools Association as a Peer Review Facilitator and as a consultant with CAIS Services.

Patti has previously served as a member of the Board of Branksome Hall and as Chair of the Board of the Rosedale Day School. She is currently the Vice-Chair of the Board of CANFAR and a member of the Board of the Upper Canada College Foundation.

In retirement Patti has relocated to Collingwood Ontario while her four grown children continue to live and work in the Toronto area.