This article discusses teachers' views of their own learning. Two groups of teachers attending graduate programmes in Seattle, Washington in the United States of America (USA) and Newcastle upon Tyne, United Kingdom (UK), participated in a project that encouraged them to discuss examples of effective professional development. The teachers from the UK were enrolled on a Masters degree course for staff working with pupils with autism. The teachers from the USA were enrolled on a Masters degree course specifically focused upon working with children who have moderate to severe difficulties. Both groups of teachers were working, at least for a portion of their timetables, with pupils who had low incidence disabilities. Phyllis Jones, of the University of South Florida, Elizabeth West, from the Department of Special Education at Boise State University, and Dana Stevens, who is working on her PhD in special education at the University of Washington, analysed the critical moments of professional development identified by the teachers in both contexts. Four themes emerged: seeing the relationship between theory and practice, the role of the professor or lecturer in mediating learning, learning from others and reflecting in action. In this article, the authors analyse the themes in relation to the subtle differences that occurred within, and across, the two contexts. This analysis will assist in the design of quality professional development opportunities that reflect teachers' voices. Teachers make meaning of their learning in highly personal ways and, although it is possible to nurture formalised learning opportunities, teacher educators need to be constantly aware of the contextual and personal meaning making that is at play.