In order to ensure that all students have access to the everyday activities and lessons of school, educators must work to create safe educational spaces and prevent bullying and harassment in schools. This literature review presents the research highlights on: (1) prevalence and impact; (2) risk factors; (3) school obligations under law; (4) avoiding ineffective anti-bullying programs; (5) fostering change; (6) school climate; (7) addressing bias-based harassment; and (8) addressing cyberbullying. Research on strategies at the school, classroom, and individual levels are also presented.