This study was inspired by an inclusive intercultural perspective on education, and developed empirical knowledge concerning the intercultural professional development of in-service teachers. The study was conducted during the first year of a newly-designed master's programme that focused on "education for refugees". In the Netherlands master's programmes in education qualify inservice teachers to contribute to school development, together with giving them a specialisation in a specific topic. The findings were based on the teachers' written work, and interviews with the teacher educators. They show that the intercultural professional identity of the teachers was developed by a combination of pedagogical approaches. These include the following: new knowledge from an inclusive intercultural perspective, critical socio-cultural self-examination, real encounters with newly-arrived refugees, and a reflective, intervention-based approach to professional learning and curriculum renewal. The intervention-based approach turned out to be the most important for the teachers' agency in intercultural school development. The challenges experienced concern mono-cultural practices in mainstream education for refugees, together with the dominance of an instrumentalist approach to teaching and learning. Windesheim University is a large university of professional studies situated in a medium-sized city in the east of the Netherlands. The department of education of this university includes educational research and teacher education (ba and ma). Over 500 students study for a master's degree. The 19 specialisations offered vary from learning & innovation to religious education and education for newcomers. The University of Humanistic Studies is a small university situated in one of the major cities of the Netherlands.