Complex cyberbullying prevention programme for schools called IMPACT have been developed as a consortium project in collaboration with experts from the Faculty of Psychology of Warsaw University, as well as Warsaw Technical University and the Institute of Occupational Medicine in Łódź. The programme is based on best practice evidence and includes components of psychological, social and technological intervention. As a result a final version of a 10-hour programme together with a handbook and necessary materials such as films, multimedia presentation and an app has been produced. The programmed also comes together with an e-learning course for teachers which shows them how to conduct the classes.