This study attempts to explain the substantial differences in mathematical achievement of elementary students in a Delaware school district by analyzing the level of content and pedagogical knowledge of elementary math teachers. I examined tenth graders' longitudinal state test results in mathematics and found that performance in the primary years…

The Delaware Education Research and Development Center (DERDC) conducted a two-part study to determine the impacts of this program on participating schools in the state. In the first part, DERDC interviewed a sample of administrators and teachers from 6 of the 15 participating schools. Their responses helped design a survey that was administered…