 The university campus received a C+ grade from the Sustainable Endowments Institute on its College Sustainability Report Card for 2011.In 2019, the University of Waterloo was ranked 13th in the world, and fifth in Canada in "Times Higher Education" University Impact Rankings, a ranking that evaluated 450 universities against the United Nations’ Sustainable Development Goals.The university operates under a bicameral system of a board of governors and a senate, as legislated by the University of Waterloo Act, 1972.