Harassment and bullying among 186 students with intellectual disabilities, ages 12 to 21 years, in special education schools were examined. The differences between bullies and victims in terms of social adjustment and social skills were investigated. No prototypes characterizing differences in social skills were found between the three subgroups: victim, bully, and victim-bully. However, bullies and victim-bullies exhibited significantly higher levels of challenging behaviors, such as temper tantrums, unruly and quarrelsome behavior, and a tendency to lie and steal. Significant correlations were also found among actions as a bully, violent behavior, and hyperactivity. Being a victim was correlated with emotional and interpersonal problems.