Bullying is a significant public health problem because it is prevalent and harmful. Between 20% and 56% of young people are involved in bullying annually . Thus, in a classroom of 30 students, between 6 and 17 students are involved in bullying as a victim, perpetrator, or both (bully-victim). The specific rate of bullying victimization and perpetration varies according to age, type of bullying, time period over which bullying behaviors are assessed, and by subgroup. Younger (middle school-aged) children are more likely to be involved in bullying than high school-aged children . Verbal bullying is generally more prevalent than physical or cyber-bullying and bullying is more likely to occur over a longer time period—“ever” or over the “past year” as opposed to “the past few months” . Specific subgroups are more likely to be victimized. For example, bullying victimization is more prevalent upon lesbian and gay youth—60% report victimization during the past 30 days prior to the survey compared with 28.8% of heterosexual youth.