School health programmes are the most cost-effective way to influence health behaviours in young people. The purpose of this two-part handbook is to support schools as they seek to implement interventions in order to reduce the main modifiable risk behaviours for noncommunicable diseases. This Practical application handbook provides advice to schools on providing young people with the knowledge, attitudes, beliefs and life skills necessary for making informed decisions, and creating a healthy school environment that can reduce the risk of NCDs