In recent years, as a school, we have been part of a project group consisting of schools from France, Denmark, Italy and Spain. Together we have carried out work to give students cultural and scientific experiences in the various project weeks. The pupils stayed in host families, so they were immersed in the culture of the country concerned. The overarching theme was living on Mars. We have divided the three years into three main themes. Year 1: Astronomy, Year 2: Sustainability and year 3: Water. Within these themes, project weeks were organized in which students attended workshops that included assignments for these themes. In addition, theme-specific assignments were carried out at the various schools for each exchange week. As a result, not only the students who participated in the exchange had an instructive experience, but also the students who were not selected. The goals of the project were:- Improving the skills in IT- Awerness of cultural diversity- Acceptance of social diversityAll goals were achieved by the students who participated during these project weeks. The different schools are called this form. These have not changed during the project period