This article describes the system of monitoring district instructional-reform efforts and the influences of the system on teachers and school and district leaders in Duval County, Florida. First, the author offers a brief description of the snapshot system. Second, the study's design, data sources, and analytic methods are presented. Third, the effects of the snapshot system on district efforts, as reported by principals and district administrators, are presented and analyzed. This case study concludes with a discussion of the implications of such a system for monitoring district reform efforts. (Contains 1 table.)