Disciplinary activity in science is tool-mediated, and instructional designers often build in opportunities for students to use the conceptual and material tools of the discipline as they engage in activity. When this activity takes place in schools, students and teachers may modify or reject disciplinary tools to fit the goals of schooling. We…

I analyze the longer-run effects of a college-preparatory program implemented in inner-city schools that included payments to eleventh- and twelfth- grade students and their teachers for passing scores on Advanced Placement exams. Affected students attended college in greater numbers, were more likely to remain in college beyond their first year,…

This research study was designed to determine leadership and instructional behaviors of administrators and teachers who are participants in the Alabama AP Initiative, as well as evaluate the perceptions of the AAPI with regard to student performance. The importance of this research was three-fold. First, this study provided principals, as well as…