The University of Tennessee (also referred to as the University of Tennessee, Knoxville) is a public land-grant university headquartered at Knoxville. Founded in 1794, it is the flagship institution of the statewide University of Tennessee system with nine undergraduate colleges and eleven graduate colleges and hosts almost 28,000 students from all 50 states and more than 100 foreign countries. In its 2011 ranking of universities, U.S. News & World Report ranked UTK among the best national universities and public institutions of higher learning at 104th of all national universities. Its ties to Oak Ridge National Laboratory, established under UT President Andrew Holt and continued under the UT-Battelle partnership, have positioned the University as co-manager and allow for considerable research opportunities for faculty and students enjoyed by few other institutions of comparable standing. Also affiliated with the University are the Howard H. Baker, Jr. Center for Public Policy, the University of Tennessee Anthropological Research Facility, and the University of Tennessee Arboretum, which occupies 250 acres (1.