Oklahoma State University–Stillwater (also referred to informally as Oklahoma State, O-K-State, O-State and OSU) is a land-grant, sun-grant, coeducational public research university located in Stillwater, Oklahoma, USA. OSU was founded in 1890 under the Morrill Act. Originally known as Oklahoma Agricultural and Mechanical College (Oklahoma A&M), it is the flagship institution of the Oklahoma State University System. Official enrollment for the fall 2010 semester system-wide was 35,073, with 21,149 students enrolled at OSU-Stillwater. OSU is classified by the Carnegie Foundation as a "High Research Activity campus". Oklahoma State University is listed by the Princeton Review as one of 120 “Best Western Colleges” for 2011, and as one of 50 "Best Value Colleges – Public" for 2010. It is ranked by U.S. News & World Report No. 66 among "Top Public Schools:National Universities" and No. 132 among all National Universities for 2011. For 2009–10, Kiplinger listed OSU among its "100 Best Values in Public Education," with an in-state ranking of No. 91 and an out-of-state ranking of No. 93.