Systematic reviews have witnessed significant growth across many fields, including education. In this article, we outline the background of this growth, highlight the tendency to focus on methodological considerations, and propose a framework to support education researchers in preparing systematic reviews with broad impact. We draw on our…

In comparing several research and evaluation studies, the author contends that variation in outcomes may provide clues to valuable information. Five examples are used to illustrate how conflicting findings can be useful. (RLV)

Most of the variance in educational effectiveness studies is inexplicable in terms of influences that can be measured and controlled. Nevertheless, it is still possible to design educational policy that will function well under conditions of uncertainty. (Author/RLV)