An increasing number of schools are implementing gifted cluster grouping models as a cost-effective way to provide gifted services. This study is an example of comparative action research in the form of a quantitative case study that focused on mathematic achievement for nongifted students in a district that incorporated a schoolwide cluster…

A national literacy professional development project reduced the achievement gap for students experiencing difficulties in reading or writing in 91 of New Zealand's schools. It was based on two premises: coherence within and between the multiple levels of the schooling and educational administration systems, and a focus on evidence-informed…