The teachers participated voluntarily in this project. School
leaders and teachers in these schools were highly motivated to
improve their citizenship education practices by means of curriculum
development. By collaborating with these schools in which CE
in all likelihood, according to the need that was expressed, was not
yet sufficiently established, we supposed we would get a better
understanding of the possibilities for developing teachers' understanding
and pedagogical professionalism. Therefore, the schools
were considered to consist of a rich illustrative variety of information
for understanding the phenomenon e in this case teachers'
understanding of CEe more in depth (Miles & Huberman, 1984, p.
27; Eisenhardt, 2002).