Participants will be enlisted at the three schools in Denmark; Pilelygaard, Pilen and Kompasset - each part of an organization called Behandlingsskolerne which has approximately 100 students enrolled at any time. Daily treatment is primarily offered in a school setting, but can take place elsewhere (visiting a café, walk in the park etc.). Family work will be carried out in the student´s home or at school meetings. Students in these schools do not have ASD as a primary diagnosis or a very low IQ. However, the level of comorbidity is high. More than half of the students have more than one diagnosis.