degrees in 51 academic majors and 33 minors. The college's academics are divided into five divisions: the Biological Sciences Collegiate Division, the Physical Sciences Collegiate Division, the Social Sciences Collegiate Division, the Humanities Collegiate Division, and the New Collegiate Division. The first four are sections within their corresponding graduate divisions, while the New Collegiate Division administers interdisciplinary majors and studies which do not fit in one of the other four divisions. Undergraduate students are required to take a distribution of courses to satisfy the university's general education requirements, commonly known as the Core Curriculum. In 2012–2013, the Core classes at Chicago were limited to 17 courses, and are generally led by a full-time professor (as opposed to a teaching assistant). As of the 2013–2014 school year, 15 courses and demonstrated proficiency in a foreign language are required under the Core. Undergraduate courses at the University of Chicago are known for their demanding standards, heavy workload and academic difficulty; according to Uni in the USA, "Among the academic cream of American universities – Harvard, Yale, Princeton, MIT, and the University of Chicago – it is UChicago that can most convincingly claim to provide the most rigorous, intense learning experience." Graduate schools and committees The university graduate schools and committees are divided into five divisions: Biological Sciences, Humanities, Physical Sciences, Social Sciences, and the Pritzker School of Molecular Engineering (PME). In the autumn quarter of 2015, the university enrolled 3,588 graduate students: 438 in the Biological Sciences Division, 801 in the Humanities Division, 1,102 in the Physical Sciences Division, 1,165 in the Social Sciences Division, and 52 in PME. The university is home to several committees for interdisciplinary scholarship, including the John U. Nef Committee on Social Thought. Professional schools The university contains eight professional schools: the University of Chicago Law School, the Pritzker School of Medicine, the Booth School of Business, the University of Chicago Divinity School, the University of Chicago Harris School of Public Policy, the University of Chicago School of Social Service Administration, the Graham School of Continuing Liberal and Professional Studies (which offers non-degree courses and certificates as well as degree programs) and the Pritzker School of Molecular Engineering. The Law School is accredited by the American Bar Association, the Divinity School is accredited by the Commission on Accrediting of the Association of Theological Schools in the United States and Canada, and Pritzker is accredited by the Liaison