title: The significance of enrollment, attendance, and engagement.
authors.forename: Gil G
authors.initials: GG
authors.lastname: Noam
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D003258:Consumer Behavior; D006801:Humans; D016730:Program Development; D011998:Recreation; D040242:Risk Reduction Behavior; D012449:Safety; D012574:Schools / Q000458:organization & administration*; D012657:Self-Help Groups; D012932:Social Facilitation; D012944:Social Support; D014481:United States