The concept of bullying is understood and described from differing vantage points in different countries. This chapter provides a wide range of possible definitions of bullying, both from the UK and other countries. It is important for individuals to decide what is bullying for them and to share their ideas with other people. The chapter argues that each of the categories of people, such as, the bully, the bullied and the bystander have particular defining characteristics. Bullying can be seen as an abuse of power, and a lack of power can lead to a high risk of bullying. In the UK there are hundreds of groups and organisations that offer anti-bullying programmes or help with anti-bullying strategies to schools. For schools to efficiently and sensitively challenge and deal with bullying they need to develop a whole school approach. The policy needs input from all school members including teachers, students, administration staff, caretakers, kitchen staff, governors and parents.