This essay is a qualitative interview study of how six upper secondary school history teachers view and work with students’ diversity of identities in teaching. The questions that the study sought to answer were how history teachers viewed and worked with students’ diversity of identities, as exemplified by specific assignments, along with their selection of teaching materials, and the impact of their own identity on their teaching. These questions were analysed using Manuel Castells’ three aspects of legitimate identity, resistance identity, and project identity, complemented by Carsten Ljunggren’s reasoning concerning a national identity, as the main theoretical framework. In doing so, the study concluded that the teachers viewed working with identity in the history subject as a luxury, dependent on factors such as lesson time, adaption to students, citizen education, and the room for a norm-critical approach. Due to these factors, it was concluded that the history subject unintentionally and mainly conveyed a legitimate identity to the students.  From their exemplified assignments, the study found that student-centred assignments more often enabled the inclusion of resistance identities as well as project identities. The teachers claimed that teaching materials such as textbooks were Eurocentric and needed to be complemented by other material to include other perspectives. It was also concluded that teachers’ gender, social class, and ethnicity had an impact on their teaching. The study found that a new national identity in the history subject, as illustrated by the inclusion of project identities, was linked to the use of intercultural pedagogy and student-centred assignments.