This paper documents the development of a “grassroots” teacher professional development model from Pakistan and region designed around three critical aspects: (a) the impact on classroom teaching and learning, (b) the provision for capacity building, and (c) a mechanism for ongoing support and sustainability. The development and evolution of the innovation is presented in terms of three stages designed to increase the angle of educational reform through total school improvement. The implications of the model as a promising prototype are discussed in relation to the wider professional development needs of teachers in the developing world.