This article summarizes the main findings of a research study concerned with the position of team teaching in the secondary schools of England and Wales during the academic year 1983-84. A brief account is given of the nature and organization of team teaching schemes currently in operation. (Author/CT)

This article relates to two problems: how to deal with individual differences in heterogeneous classes and how to plan and implement professional development programs in this area. The planning and implementation of such a program through a process of collaboration between researchers and teachers is reported in the study. (Author)