“…Youth reap a wide range of positive developmental outcomes through participation, including physical health, positive psychosocial development, enhanced academic achievement, mastery of specific skills, reduction in violence and risk-taking behavior, and positive identity development (Bronfenbrenner, 1979;Eccles & Gootman, 2002;Pittman, Martin, & Williams, 2007;Resnick et al, 1997;Scales, Benson, Leffert, & Blyth, 2000;Scales & Leffert, 1998;Walker, 2006;Weiss, Little, & Bouffard, 2005;Zeldin, Camino & Calvert, 2007). Scales et al (2010) found that 15-year-olds who scored high on a relationships and opportunities index (measuring opportunities for participation and supportive relationships) were much more likely than low scorers to: work up to their ability at school (60% vs. 25%); have a grade point average of 3.5 or higher (73% vs. 53%); have a sense of purpose and hope for their future (59% vs. 17%); and have a positive sense of their ethnic identity (56% vs. 15%).…”