A paper-and-pencil self-report anonymous questionnaire developed by the research group is used to determine whether the interventions have changed the outcomes. The questionnaire will be administered in classes by the researchers at baseline, at the end of the intervention and one-year after the end of the intervention (at equal intervals both in the intervention and in the control group). The questionnaire consists of the following sections: 1) demographics, 2) emotional and social skills, 3) psychological wellbeing, 4) school experience, 5) unhealthy and risky behaviours, 6) prosocial and aggressive behaviours. Questionnaires are linked through an anonymous self-generated code.