Bullying is a hot topic at schools across the nation. Chronic involvement in bullying is associated with many intrapersonal, interpersonal, and academic problems, and even sporadic experiences of bullying are harmful. During the last two decades, several prevention and intervention programs have been developed by research teams all over the world. Many of these programs have been adopted in the United States. This volume introduces five evidence-based anti-bullying programs developed in European countries, where much of the early innovations and adaptations have occurred. Based on state-of-the-art knowledge, This volume answers: * How can educators detect that bullying is going on in their school? * How can educators respond competently in acute bullying situations? * How can educators prevent bullying in their schools in the long run? This is the 133rd volume of New Directions for Youth Development, the Jossey-Bass quarterly report series dedicated to bringing together everyone concerned with helping young people, including scholars, practitioners, and people from different disciplines and professions.