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Prevention of sexual aggression with the Flag system

The Flag System is used for the prevention of sexual aggression and in supporting healthy sexual development: making sexuality, desires, boundaries, criteria and gradations of sexual behaviour insightful and a subject of discussion, since it makes talking about sexual behaviour easier. It is a necessary tool, taking into account that in the Netherlands and in Belgium approximately one in  five young people have experienced non-physical or physical sexual aggression.

Many professionals are uncertain about what is and what is not acceptable. The questions ‘How can I help children and young people to assess when sexual behaviour is ok or not?’ and 'How do I respond to (un)acceptable behaviour?’ are very relevant these days. The Flag System  offers an answer to these questions.

European opportunities

Sexual behaviour and sexual aggression are human traits and therefore boundaries can be crossed in this respect. We understand that professionals and organizations in other European countries are dealing with the same difficulties in identifying (un)acceptable sexual behaviour and effectively streamlining the pedagogical response in an ever-changing society. Even though the Flag System might need adjustments to fit other European settings and countries, the huge demand in both Belgium and the Netherlands makes us believe that there is a need for this tool in other countries as well. 

International website

Rutgers and Sensoa will launch flagsystem.org giving online access to the Flag System for countries outside the Netherlands and Belgium. The website will be online by the end of 2017. We want to assess how the Flag System will be received in other European countries and what organisations need from Rutgers and Sensoa in order to implement this tool. Therefore, a platform will be created in the Netherlands and Belgium to inform professionals and organisations about this project and further developments.


If you are interested in implementing the Flag System in your country and/or if you wish to stay connected, please fill in this form. We will make sure you receive our updates regularly.