The tool was developed to measure: (a) change of science-related attitudes over time among students; and (b) the effect of similar curricula on the attitudes of different classes.
The issue of “scale” is a key challenge for school reform, yet it remains undertheorized in the literature. Definitions of scale have traditionally restricted its scope, focusing on the expanding number of schools reached by a reform. Such definitions mask the complex challenges of reaching out broadly while simultaneously cultivating the depth of change necessary to support and sustain consequential change. This article draws on a review of theoretical and empirical literature on scale, relevant research on reform implementation, and original research to synthesize and articulate a more