This article considers the professional development of 75 primary and secondary teachers in Melbourne, who had been charged with the responsibility of leading the professional learning of their colleagues in their schools. To support these leaders in their roles, the Victorian state government’s Department of Education applied to the Pedagogy and Professional Learning Research Group at Monash University to develop and implement an appropriate Professional Learning program. The participants in the program reflected on their learning through the formalised process of case writing. The article offers insights into the journey of these educators of teachers as they have developed deeper understandings of what it means to be a teacher educator.