Around 30 percent of 15 year olds report experiencing bullying. In this interview Professor Lucy Bowes from Oxford University, talks about the long term impacts this can have on mental health, who is at risk of being a bully and being a victim and why we should understand the whole picture. It really is everybody's problem and schools need to address if from a whole school stand point. If you want to find out more about Lucy's research and the KiVa project click here.