The Education Endowment Foundation (EEF) was established in 2011 and has so far committed over £75 million to education research projects involving over 7,000 schools. It is perhaps best known for the Teaching and Learning Toolkit, a synthesis of research used by two thirds of schools in England, and for the use of RCTs in education. As EEF passes its 5th anniversary, and the publication of over 60 trial evaluations, this presentation will discuss findings from that research and lessons learnt to date. It will first highlight emerging areas of promise and some examples of projects that have been more and less effective. It will then discuss the challenges of translating these findings into practice, and how approaches can be taken to scale. Finally, it will look at priorities for EEF’s work in the future, including the challenges of conducting trials in new areas.