The Integrated Postsecondary Education Data System (IPEDS) collects institution-level data from postsecondary institutions in the United States (50 states and the District of Columbia) and other U.S. jurisdictions. IPEDS defines a postsecondary institution as an organization that is open to the public and has the provision of postsecondary education or training beyond the high school level as one of its primary missions. This report describes the universe, methods, and editing procedures used in the 2015-16 Integrated Postsecondary Education Data System (IPEDS) data collection. IPEDS data consist of basic statistics on postsecondary institutions regarding tuition and fees, number and types of degrees and certificates conferred, number of students applying, number of students enrolled, number of employees, financial statistics, graduation rates, student financial aid, and academic libraries. Institutions submitted these data during three reporting periods corresponding to fall 2015, winter 2015-16, and spring 2016. Information provided in this report is applicable to the full 2015-16 IPEDS collection year; response rates and specific information on data collected during a particular collection period are included in the "First Look" report specific to that collection period.