Challenges in implementing school-based drug prevention programs led by law enforcement officers.

School-based prevention drug programs in the United States and Brazil are most commonly delivered by law enforcement officers (LEOs). However, limited research has explored challenges involved in the delivery of these interventions specifically related to their implementation by LEOs. We aim to describe the challenges affecting the implementation of school-based drug prevention programs delivered by LEOs.

Implementation fidelity of a Brazilian drug use prevention program and its effect among adolescents: a mixed-methods study.

Background: Based on the US DARE-kiR, a version of the Keepin' it REAL program, the Drug and Violence Resistance Educational Program (PROERD) is the most widely implemented Brazilian prevention program. It originates from the translation of the DARE-kiR, a version of the Keepin' it REAL program. Previous results suggest its inefficiency in preventing drug use among Brazilian adolescents.

Does #Tamojunto alter the dynamic between drug use and school violence among youth? Secondary analysis from a large cluster-randomized trial.

The present study investigated how intervention might alter the relationship between perpetrating violence and later drug use. A cluster-randomized controlled trial design involving 72 schools (38 intervention, 34 control) and 6390 students attending grades 7 and 8 was employed in Brazil. Drug use and violence were assessed at three points.