Evaluation of a Combined Parent-student Programme for Smoking Prevention in Berlin Schools

School Inclusion Criteria A school is eligible for the study if * it is located in Berlin * has 7th grade classes (students between 12-15 years) School Exclusion Criteria: * schools offers an extensive smoking prevention program for their students that includes parental involvement. * schools that do not agree to stop visiting the KARUNA e.V. smoking parcours (if they do) for the next two years in case of being randomized to the control group. * schools that do not agree to have a parents' night (separate or part of the typical parents' nights) where trained health coaches will introduce and discuss the topic of smoking prevention in youth in case of being randomized to the combined student-parent intervention. Student Inclusion Criteria A student is eligible for the study if * Female or male in the 7th grade * Signed written assent * Intellectual and physical ability of participant to make an informed decision about study participation * Attends one of the participating schools * Has signed approval from parent/caregiver