This study examines the effectiveness of scaling up a vocabulary intervention, pre-K-first grade, using a structured adaptation of the World of Words that allowed teachers some autonomy over its implementation. The purpose was to determine whether such an adaptation could maintain fidelity and promote positive child outcomes. Classrooms (pre-K…

Vocabulary forms a relentless divide between children who succeed and those who do not. This divide is often between poor children and their privileged counterparts. Without vocabulary knowledge, children cannot interpret text meaningfully or respond in ways that enable them to fully participate in classroom discussions. "All About…