Eighteen experts in the field of bullying and cyberbullying and the SRSG on Violence against Children, have written a unique contribution from their specific area of expertise, addressing bullying and cyberbullying. Starting with a human rights foundation and children participation, it is followed by examples that show different experiences in developing policies and legislation, including specific dimensions and vulnerable groups to be kept in mind. The publication then provides different examples of the very few evidence-based interventions that have proven to work in the prevention and respond to bullying and cyberbullying in the school and its surroundings, decreasing its prevalence. The publication ends with information on global data and the need for better collection and analysis methodologies; a section addressing some of the specific aspects presented by cyberbullying and the use of information and communication technologies, and ends with an overview of prevalence of bullying and cyberbullying in different regions in the world.