Replication studies in education are relatively rare. Of the few which are conducted, many are conceptual rather than direct replications. With so few replication studies, and many of those that are attempted producing null results, the scientific status of the evidence base for educational policy and practice is in question. Replicating Makel and…

Across the evidence-based policy and practice (EBPP) community, including education, randomised controlled trials (RCTS) rank as the most "rigorous" evidence for causal conclusions. This paper argues that that is misleading. Only narrow conclusions about study populations can be warranted with the kind of "rigour" that RCTs…

What role does scientific evidence play in educational practice? Supporters of evidence-based education (EBE) see it as a powerful way of improving the quality of public services which is readily applicable to the education sector. Academic scholarship, however, points out important limits to this applicability. I offer an account inspired by…

Within evidence-based education, results from randomised controlled trials (RCTs), and meta-analyses of them, are taken as reliable evidence for effectiveness -- they speak to "what works". Extending RCT results requires establishing that study samples and settings are representative of the intended target. Although widely recognised as…