In this study of 16 teachers in two primary schools in the Netherlands, researchers built on findings from previous studies to demonstrate that a thoughtfully designed professional development program can be "effective and sustainable, if certain conditions are met" (p. 772) in changing teachers' knowledge, beliefs, perceived problems,…

Joellen Killion is senior advisor to Learning Forward. In each issue of JSD, Killion explores a recent research study to help practitioners understand the impact of particular professional learning practices on student outcomes. The study presented here builds on past research about the relationships between teacher practice and beliefs, teacher…

Adopting new curricula presents both a need and an opportunity for professional development to advance teacher content knowledge and instructional practices for achieving curriculum-specific student outcomes. This study examines two modalities of professional development: face-to-face in a summer workshop and online that included two days of…