For ethical reasons, it is not possible in this study to have a control group that does not receive treatment. The Ministry of Social Affairs legislation does not allow students to be in a control group with no treatment in a special school setting. Due to these circumstances, the study will be a pragmatic RCT study. Therefore, a two-arm RCT will be carried out to evaluate whether the effectiveness of the intervention is greater when delivered in an "enriched/need Based provision" (ENP) format compared to a "usual provision" (UP).