By examining the history of national and international in-service teacher education literature, policies, trends, and developments, this paper aims to highlight Turkish institutional and academic memories and the memory that has been lost. Adopting qualitative methodology through context and historical review approaches, policy documents, research articles, official newspapers and websites, and congress minutes were analyzed. The findings indicated that, in an international setting, in-service teacher training has been developed by establishing an understanding and creating memories through implementations, experiences and findings from research. On the other hand, in the Turkish setting in-service teacher training is influenced by changing regulations, personal bureaucratic decisions and fundamental reform movements, which fail to consider the research findings.

Keywords: In-service teacher training, Professional development, Teacher training ,Turkish education setting