Many educational policies hinge on the valid measurement of student economic disadvantage at the school level. Measures based on free and reduced-price lunch enrollment are used widely. However, recent research raises questions about their reliability, particularly following the introduction of universal free lunch in certain schools and…

The United States is in the midst of an effort to intensify middle school mathematics curricula by enrolling more 8th graders in Algebra. California is at the forefront of this effort, and in 2008, the state moved to make Algebra the accountability benchmark test for 8th-grade mathematics. This article takes advantage of this unevenly implemented…

Analyzing mathematics and reading achievement outcomes from a district-level random assignment study fielded in over 500 schools within 59 school districts and seven states, the authors estimate the 1-year impacts of a data-driven reform initiative implemented by the Johns Hopkins Center for Data-Driven Reform in Education (CDDRE). CDDRE…

The common reporting of effect sizes has been an important advance in education research in recent years. However, the benchmarks used to interpret the size of these effects--as small, medium, and large--do little to inform educational administration and policy making because they do not account for program costs. The author proposes an approach…

The supplemental educational services (SES) provision of No Child Left Behind introduces a federally mandated after-school tutoring intervention in schools that fail to make adequate yearly progress. This article examines market dynamics in relationship to the law's goals of expanding access to and improving the quality of after-school…

The process of changing was assessed in four schools at the midpoint of a five-year essential schools restructuring effort in Illinois. Cross-case analysis results in identification of factors affecting the change process by examining benchmarks of substantial agreement, observable change, all-school participation, and systemic leadership. (SLD)