“…School-based curricula, certain structured afterschool activities, community- and home-based parent training programs, and community-wide prevention strategies have all been found to be effective in reducing adolescent drug use, delinquency, violence, and other problem behaviors (Hawkins & Catalano, 2004; Mihalic, Fagan, Irwin, Ballard, & Elliott, 2004; Sherman, Gottfredson, MacKenzie, Eck, Reuter, & Bushway, 1997; Welsh & Farrington, 2006). …”