Although research provides ample evidence of teaching methods that facilitate students' learning of specific word meanings, the potential of instruction to impact students' general vocabulary knowledge has remained an unanswered question. This article reports on a three-year formative experiment that developed, implemented, and tested a long-term,…

This study sought to examine sustained, school-based professional development (PD) on explicit reading comprehension strategy instruction (ERCSI) and its influence on teacher knowledge and practice and on student outcomes. Eight teachers participated - four first-grade and two teachers each from second and third grade. At the beginning of the…