Donald Gutteridge had originally arrived in 1962 at MacMurray's request, and had taught Grade 13 English. In 1972, Gutteridge succeeded MacMurray. Although he was the school's fifth headmaster, he was the first to call himself a "principal". During his tenure as the Premier of Ontario, Bill Davis came under fire for publicly funding UTS, which Liberal education critic Tom Reed called an "elitist" institution. Under pressure from the provincial government and the University of Toronto, a decision was made to admit girls into the school. Two proposals were tabled: the first involved expanding the school by maintaining the same number of incoming boys, and the second involved maintaining the class size by reducing the number of incoming boys. On January 18, 1973, the University of Toronto approved the second proposal, paving the way for a co-educational UTS the following academic year.The first two co-educational cohorts totalled 70 students; each cohort was divided into two classes of 35 students. In spite of initial concerns about the watered-down quality of UTS boys athletics, the junior girls basketball team won a city title in 1978. In order to assist families in financial need, the UTS Endowment Fund was set up in 1980; in 1989, approximately $50,000 was distributed to students in need.