Educational research has for a long time, and from various angles, been criticised for fairly unilaterally researching teachers and their activities, rather than allowing them to be involved in the research process as such. In parallel with this, practice-based school research has been requested in research, and aiming for developing teacher's teaching on a scientific basis and putting theories into practice has been an area of focus in steering documents as well in research (cf. Brante et al. 2015; Carlgren 2017; Lo 2012; SFS 2010: 800). Over the past decade, however, one can see a development where teachers are increasingly involved in research, and where they, together with researchers, focus on issues that the school and its teachers have been involved in formulating (Ko 2018; Postholm 2018). In this work, action research studies in iterative circles such as Learning studies have been identified as effective approaches for teachers to change and develop their teaching practices, as well as improving student learning (cf. Marton and Ling 2007; Pang and Ling 2012; Timperley 2011). According to Lo (2012) theories need to be tested in practice in order to see how they can be useful for teachers to improve teaching and learning. Furthermore, Lo argues that Learning studies need to be developed in more subject areas than what has been previously been done and also stresses the