In this study only one or two teachers from each school
participated. However, since teacher collaboration and communication,
exchanging concerns or ideas and observing each other's
practices seems important for developing professionalism in
teaching CE and developing understanding of CE, it is necessary to
involve more teachers within one school. Moreover, it appeared
that the selection of teachers schools was not always very
thoughtfully processed despite the fact that schools volunteered to
participate in this project. It emphasizes the importance of deliberation
when setting up such projects within schools. The
involvement of more teachers in one school might also change the
current isolated practices pointed out by Levine and Marcus (2010).