“…Program fidelity is positively associated with program effectiveness (Leff, Hoffman, & Gullan, 2009), and, when programs don't work, information on program fidelity is key to distinguishing between an ineffective program and a poorly implemented one (Gresham, Gansle, & Noell, 1993). However, information regarding fidelity, or intervention integrity (Leff et al, 2009), is rarely reported and even less likely to be a direct focus of study (DuPaul, 2009). For example, in their review of 249 violence prevention programs, Wilson & Lipsey (2007) found that the majority of studies (65%) did not contain information on implementation fidelity.…”