Educators and policymakers are paying increased attention to the academic outcomes of students in the middle grades (i.e., Grades 6-8). One reform proposed to improve outcomes for these students is to replace middle schools (with Grade 6-8, 7-8, or 7-9 configurations) with K-8 schools. This longitudinal study evaluated the effects of continuously…

This article explores the case of a Vietnamese teacher whose conception of teaching changed greatly following a short but intensive series of lessons based on the Japanese experiences with atomic bombs. The following three issues are considered: 1) what types of efforts teachers should make to increase the depth of their lessons, on the basis of…