This paper is based on a series of previous research studies looking at the impact and development of teachers in the UK and internationally. It suggests that there is no convincing evidence, in terms of test outcomes, that some teachers are more or less effective with equivalent pupils. This is not necessarily because teachers are not…

The classification by many scholars of numerical research processes as quantitative and other research techniques as qualitative has prompted the construction of a third category, that of "mixed methods", to describe studies that use elements from both processes. Such labels might be helpful in structuring our understanding of phenomena. But they…

This article started as a debate between the two authors. Both authors present a series of propositions about quality standards in education research. Cook's propositions, as might be expected, not only concern the importance of experimental trials for establishing the security of causal evidence, but also include some important practical and…