This article reports on a study of teachers who have engaged in systematic research about their practice. It describes the inquiries of two urban teachers into challenges and dilemmas common to many who work with diverse groups of students. The accounts presented reveal how teachers are able to construct new knowledge about teaching when they…

Suggests that good fourth-grade teaching is an expert activity--a complex activity that is not amenable to scripted materials, standardized lessons, or any one-size-fits-all plan for the organization of instruction. Shows that the 30 exemplary teachers discussed produce superior educational gains as measured on standardized achievement tests--not…