Four educators respond to the article in this issue which suggests that statistical data do not support a link between student achievement and staff development. The responses revisit the research used in the original article, suggesting that the link exists and discussing how future research could be improved. (SM)

This article describes services the staff development system will need to be successful, presenting the structures for governance and organization and illustrating the interface of the system with the needs of individuals, professionals, schools, and school districts in curriculum, instruction, and technology. (SM)