Citizenship education in Denmark is considered as having a long history, not least as an important part of the folk high school tradition. More recently, it has become an important ingredient in the process for immigrants to obtain Danish citizenship. The focus of this paper is to analyse how the above types of citizenship education build on a particular imagining of the nation by engaging with the tradition and content of citizenship education as linked with the folk high schools and the preparation for the citizenship test. This is analysed within a critical interculturalist perspective and with Denmark as case.