The aim of the research project is to analyse policy changes concerning the Swedish preschool class. The preschool class for six years old children is described as a transition zone between preschool and school (Ackesjö and Persson, 2016. Teachers construct an educational position for the preschool class that is influenced by both the social-pedagogical and the academic school traditions (Lago, 2014). New institutionalism and policy enactment theory are used to understand how teachers adapt, interpret and transform policy to a local educational context (Czarniawska, 2005; Powell & DiMaggio, 1991). Recontextualisation is a key concept in the policy enactment theory to analyse how teachers do policy (Ball et al., 2012). Theories of professionalisation processes are used to understand the importance of professional recognition and jurisdiction. This is a longitudinal policy ethnographic study over four years (2018-2021). The main methods are document analyses and interviews with teachers and principals. All respondents are guaranteed confidentiality and anonymity. They are free to leave the project at any time. On policy level, the term ‘schoolarisation’ describes a positional shift for the preschool class in the education system. Parallel processes of re-contextualisation are initiated when new curriculum is confronted with the teachers interpretations of their assignment. Teachers express a recognition in terms of a societal trust in the teaching they conduct. The study implicates that there is no linear relation between new policy and educational practice, instead policy is re-contextualised in relation to local organisation and teachers´ beliefs.