This article provides commentary on the five articles in this issue on large-scale interventions in science education for diverse student groups in varied educational settings. Using these articles as a point of departure, I discuss three challenges to science education research and practice. The first concerns the changed meaning of science…

Legislation such as No Child Left Behind (NCLB), the Individuals with Disabilities Education Act, and its reauthorization, the Individuals with Disabilities Education Improvement Act, mandate that evidence-based practices be used in schools. In fact, NCLB requires that "scientifically-based research" be the basis for classroom practices…

In the US debate over science-based educational research, experimentation is again coming to the fore as ideal for establishing an evidence base of what works in educational interventions thus contributing to the climate of accountability in educational research and practice. Mixed methods research is being positioned in this discussion as a…

In this keynote address presented at the Mid-western Educational Research Association Annual Meeting in October, 2004, the author discusses the increasing interest of federal policy-makers in scientifically-based research. A comparison between education and other disciplines is offered, and a proposal for increased rigor in educational research is…