Jack Koenka’s teaching career began in 1978 after graduating with a mathematics degree from the University of Waterloo and attending the Faculty of Education at the University of Toronto.  His first teaching job was at Upper Canada College in Toronto where he ultimately became head of the mathematics department. In 1996 Jack left U.C.C. to head up the mathematics department at Havergal College in Toronto.
In recent years Jack has written a number of courses and texts for mathematics students at Havergal. He has been a marker for the Euclid and Descartes Mathematics Contests and has been a member of both the Gauss and Cayley Contest committees. He has also taken part in
numerous mathematics conferences and professional associations.
Jack was born in Istanbul, but came to Canada as a toddler. He is a sports enthusiast and has been a competitive squash player for nearly twenty years. Jack has applied his love of sports to his work over the years - coaching many school teams. He is an avid traveller and has the advantage of speaking French and Spanish fluently.