Florida International University (FIU) is a public research university with its main campus in Westchester, Florida, United States. Founded in 1965 by the Florida Legislature, the school opened to students in 1972. FIU is the third-largest university in Florida and the eighth-largest public university in the United States by enrollment. It is a constituent part of the State University System of Florida and one of four state-designated Preeminent State Research Universities.