Background: Master teachers in Singapore have been recognised on the basis of their invaluable contribution in their field of teaching, and are deemed to be at the pinnacle of their career. A national programme for incumbent and potential master teachers, Advanced Senior Teachers Programme (ASTP), was inaugurated in 2005. Conducted by the National Institute of Education, an institute of the Nanyang Technological University of Singapore, it serves to address the professional development needs of this special group of senior teachers. Aim: The aim of this paper is to present the practice and experiences with regard to the professional development of incumbent and potential master teachers in Singapore. Comments: Three cohorts of participants successfully completed the professional development programme. There was country-specific involvement by the university and the ministry of education. Based on feedback and intensive professional engagement, measures were taken to rectify mistakes and also improvements made for the subsequent two cohorts since the initial commencement of the programme. Conclusion: The Singapore practice has offered a formal professional development platform for incumbent and potential master teachers. Policy makers and practitioners alike could benefit from the Singapore experiential practice of providing such a programme, and could better pre-empt problems and deliver training needs appropriate for their existing educational contexts.