StopBullying.gov: Prevention at School. Managed by the U.S. Department of Health & Human Services, this website details who is at risk for bullying, state-by-state anti-bullying legislation, and resources to assist with prevention and response.
Child Trends Data Bank: Bullying Updated December 2014.
American Academy of Child & Adolescent Psychiatry: Bullying Resource Center. Updated July 2015.