The relation between educational research and practice is a growing point of interest and has produced numerous lively debates. Although many reports and position papers have been published on this topic, little empirical data are available. The aim of this study is to explore the gap between educational research and practice and to assess the views of different key actors. After reviewing the literature, focus group interviews were organised with teachers, school leaders, researchers, and intermediaries. Questionnaire data were obtained from educational research professors in Flanders. Results indicate that the gap between educational research and practice should be approached as a complex and differentiated phenomenon. All participants agreed that more cooperation between researchers and practitioners is necessary. This could be achieved by establishing "professional learning communities" or by promoting a "design-based research" model. (Contains 1 table.)