'This is really something that has hit our Oshawa community,' said the school's principal Michael O'Brien.

Fifty-year-old Chris Traynor and his children, 20-year-old Bradley Traynor, 15-year-old Adelaide Traynor and 11-year-old Joseph Traynor were killed in their home during an early morning shooting on September 4.

The University of Guelph says Bradley Traynor was a third-year bachelor of commerce student majoring in management economics and finance.