Bullying is a form of violence that can leave lasting negative effects on school-aged youth. This literature review examines research on bullying frequency, predictors and impacts, and prevention and intervention programs. Research finds that between 20% and 40% of youth in the United States have experienced bullying (with variances in data sources and groups examined) and that there are a host of negative outcomes for those exposed to it. Programs that address bullying vary, but there are several promising interventions to address the issue.