Mercer University is a private research university in Macon, Georgia, United States. Founded in 1833 as Mercer Institute and gaining university status in 1837, it is the oldest private university in the state and enrolls more than 9,000 students in 12 colleges and schools. Mercer is a member of the Georgia Research Alliance. It is classified as "R2: Doctoral Universities — High research activity". Mercer has four major campuses: the historic (main) campus in Macon, a graduate and professional campus in Atlanta, and four-year campuses of the School of Medicine in Savannah and Columbus. Mercer also has regional academic centers in Henry County and Douglas County; the Mercer University School of Law on its own campus in Macon; teaching hospitals in Macon, Savannah, and Columbus; a university press and a performing arts center, the Grand Opera House, in Macon; and the Mercer Engineering Research Center in Warner Robins.