The aim of this study was to explore professional identity development among social studies student teachers in a four-year teacher education program in Turkey. Fifty-five student teachers participated in the study. Data were collected about their metaphorical images about teachers and social studies teachers and a series of in-depth interviews was conducted with five of them. All data were analysed across different study years in the teacher education program using inductive content analysis. In the light of this analysis, the experiences of the five student teachers' were examined in detail to gain a deeper understanding of how they had become social studies teacher from student teachers. Practice periods appeared to be highly influential for identity development but not for all the students.