This article reflects on the potential benefits of applying systemic theory to the work of educational psychologists (EPs). It reviews developments in systemic thinking over time, and discusses the differences between more directive "first order" versus collaborative "second order" approaches. It considers systemic theories and illustrates their application in educational psychology practice through a case study. It assesses current engagement of EPs with systemic thinking, based on published literature. It hypothesises about barriers that EPs may encounter when attempting to use systemic approaches in their work, as well as possible solutions and their implications. (Contains 1 figure.)