The primary aims of this study were two-fold: (1) to describe average change in the written narrative performance of second grade students from the fall and spring of the school year; and (2) examine patterns of individual growth to test for Matthew effects. Participants included 299 children in second grade. Microstructural measures were derived…

Despite focused efforts, achievement gaps remain a problem in the America's education system, especially those between students from higher and lower income families. Continued work on reducing these gaps benefits from an understanding of students' reading and math growth from typical school instruction and how growth differs based on initial…