A study by Gulistan Kavak has been done about the therapy school, Liljanschool. The school handles children between the ages seven and twelve who suffer from psychosocial problems. These psychosocial problems may be the children’s’ experiences of psychological trauma, attachment-difficulties and anxiety. Therapists, teachers, educators and medical professionals work at Liljanschool.  The purpose of this thesis is to see how parents see their children’s’ development at the school from there very first day until there last. Three questions have been formulated: How do parents of the children understand the development of the therapy that Liljanschool contributes with? How do the parents think that the school situation has been for their children? Do the school staff´s views and the parent´s views differ regarding cooperation between staff, parents and children? I have done a qualitative study.  In-depth interviews were conducted with the staff of the school and the children’s parents. The results show that the majority of respondents were positive about the school. The analysis shows that through the extension-theory, the children and parents have developed together. The children’s’ behaviour has changed in a positive way.