“…School-based interventions are effective tools in reducing substance use (Faggiano, Vigna-Taglianti, Versino, Zambon, Borraccino, & Lemme, 2008;Karki, Pietila, Lansimies-Antikainen, Vajoranta, Pirskanen, & Laukanen, 2012). However, the impact provided by many of the programs is limited, and some of their effectiveness determinants remain unexplored (Gázquez, Garcia, & Espada, 2009).…”