 It was the first Catholic co-educational secondary school in Windsor.In 1965, Corpus Christi High School was expanded and renamed F.J. Brennan Catholic High School in honour of Monsignor Francis J. Brennan, a Windsor priest prominent in the Catholic educational system in Ontario.Starting in the Winter 2002 semester and ending in the Fall 2003 semester, a major renovation was completed on the school, displacing students between three separate campuses.