Bringing a coach or coaches into a school to provide support is not entirely a new idea in Hong Kong. In local schools there is increased emphasis on coaching – a process whereby teacher trainers provide instructional support, professional development opportunities, feedback, and materials to classroom teachers – as a means to improve instruction and strengthen the competence of teachers. This paper reports on a pilot study which involved two academic staff from the Hong Kong Institute of Education and teachers of English in a local primary school to work together to enable teacher professional development. The paper reports a sub-set of the findings of a study which aims at identifying a coaching model for English teachers' professional development, and at developing a school-based language teaching curriculum development framework pilot school using a school-based language teaching curriculum development framework piloted in earlier research projects by the investigators. Data were collected through pre-, while- and post-questionnaire surveys, focus groups interviews, and lesson observations. The findings echo earlier research that modeling instruction in individual classrooms, rather than just the provision of group-focused activities, is most likely to result in modifications in instructional practices. It is also argued that in addition to teachers' exposure to new teaching materials, continuous joint professional discourse between coaches and teachers about how to use the materials would also lead to changes in teachers' instructional goals and practices. Implications for incorporating the use of coaches into school improvement plans for optimum results will also be discussed.