Bullying is a repetitive behavior that involves an unequal relationship between the initiator and target. It can be psychological or physical harm and is influenced by peers, family, school and community. Bullying occurs in person and online, and can include verbal, social or physical acts. It affects initiators, targets, and witnesses with outcomes like depression, anxiety and lower academic performance. Schools should survey students anonymously to understand bullying issues and assess anti-bullying policies.