School engagement has a powerful influence on youth development. Youth who fail in school are at significant risk for a host of subsequent psychosocial outcomes, including substance use, risky sexual behaviors, gang involvement, and increased contact with juvenile justice authorities. Although school engagement is an important determinant of key developmental outcomes, few studies have adequately considered how polyvictimization may not only compromise school engagement but also negatively impact psychological functioning, lead to negative peer affiliations with gangs, thereby subsequently increasing the risk for drug use and subsequent juvenile justice involvement. In addition, no studies have considered how key factors such as age, gender, race/ethnicity and parenting styles may moderate those risk relationships. Based on the existing empirical literature and several unifying theories, we present a conceptual model that documents pathways from polyvictimization to multiple youth problem behaviors, with school engagement as a key mediator. This review is intended to help guide future research in these areas. We conclude with recommendations for school-based interventions and future research based on this innovative model. Keywords: Polyvictimization, Psychological symptoms, School engagement, Youth problem behaviors, Peer relationships 1. Introduction In the United States (U.S.) youth are exposed to high rates of multiple forms of violence (e.g., child maltreatment, witnessing interparental violence, community violence and bullying). Recent national surveys have found that over 60% of children are exposed to some form of violence (Finkelhor, Ormrod, & Turner, 2009). Emerging research documents that such exposures are individually associated with youth problem behaviors across mental health, school, peer and sexual domains. For instance, research provides evidence that youth exposed to repeated community and family violence report less positive school engagement (e.g., student-teacher connectedness and grade point average) and higher psychological symptoms (i.e., PTSD, internalizing and externalizing behaviors) (Margolin & Gordis, 2000;Voisin, Neilands, & Hunnicutt, 2011). However, the extant literature has not considered how these individual and combined forms of violence exposures are associated with individual risk behaviors. Additionally, there is a dearth of conceptual models that present empirical and theoretical formulations that may help us to better understand why polyvictimization and multiple youth problem behaviors often occur. Moreover, the role of school engagement as a point of intervention between violence exposures and youth problem behaviors has been underexplored. School engagement is a multi-dimensional construct reflecting the degree to which students are engaged emotionally, behaviorally and academically in school (Furlong & Christenson, 2008) and has a powerful impact on youth outcomes. In the United States (U.S.) most states mandate that all youth be enrolled in school (Alexander ...