Midwestern University (MWU) is a private medical and professional school with campuses in Downers Grove, Illinois and Glendale, Arizona. As of the 2020–21 academic year, a total of 2,987 students were enrolled at the Downers Grove campus and 3,902 were enrolled at the Glendale campus. Founded in 1900 as the American College of Osteopathic Medicine and Surgery, the Chicago College of Osteopathic Medicine is the fourth-oldest medical school currently active in Illinois. Over the years, the university expanded, adding additional degrees and programs; in 1993, the school united these programs under the name Midwestern University. In 1995, the school opened a campus in Glendale, Arizona, becoming the second and largest medical school to teach students in the state. The university is accredited by the Higher Learning Commission and the medical schools are also accredited by the American Osteopathic Association's Commission on Osteopathic College Accreditation. History The university was founded in 1900 as the American College of Osteopathic Medicine and Surgery. The school was the fourth medical school in the world to grant the Doctor of Osteopathic Medicine (D.O.) degree, and the first in the state of Illinois. Originally located on Washington Boulevard in Chicago, the school moved to Hyde Park in 1918. In 1913, the school changed its name to the Chicago College of Osteopathy, eventually becoming the Chicago College of Osteopathic Medicine. In 1986, the Chicago College of Osteopathic Medicine moved from its prior location in Hyde Park to a new campus in the western suburb of Downers Grove, Illinois. In 1991, the Chicago College of Pharmacy opened. The College of Health Sciences began in 1992. In 1993, the Board of Trustees unanimously approved a single educational mission for the institution, uniting the Chicago College of Osteopathic Medicine, the Chicago College of Pharmacy, and the Chicago College of Health Sciences into Midwestern University. In 2009, the College of Dental Medicine-Illinois opened, followed by the Chicago College of Optometry in 2014 and the College of Graduate Studies in 2018. In 1996, the university opened a new campus in Glendale, Arizona. The first college at the Glendale campus was the Arizona College of Osteopathic Medicine, which began its first courses in 1996. The college joined the University of Arizona College of Medicine as one of only two medical schools in Arizona at the time, and it remained the only osteopathic medical school in the state until AT Still University opened in