It is important to clarify that it is the municipalities with their project leaders who participate in the official programme, but they also invite and choose schools that are then offered places at the conferences and subsequently implement the AfL programme. In some of the municipalities participating in this study, it seems as if some of the schools who are not officially members of the programme believe that they are. One possible explanation for this is that some of the municipalities use strategies for sharing knowledge through conferences for all schools in their municipality. Nevertheless, it is challenging to evaluate the impact of the AfL programme on participating schools through test scores when so many schools were confused about their status/degree of involvement in the project.