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One means of accomplishing these two goals is support of the Drug Recognition Expert ( DRE ) program , which trains police officers to recognize and readily identify the signs of drug use . The components of the web page may possess attributes and relationships that , while not explicitly part of the final , viewable form , may be critical in generating the displayed result . The nation 's general acute-care hospitals were divided into urban , rural , non-teaching , teaching , and major teaching categories for the purposes of the study . It can turn productive citizens into addicts , and it can transform schools into places of violence and chaos . For the past five years , the hospital and School of Medicine have ranked first or second in U.S. News & World Report 's rankings of hospitals and of schools of medicine . DRE training , in contrast , relies on behavioral cues to better recognize the signs of drug use and gets dangerous drivers off the road and into treatment or an appropriate correctional setting .