This research empirically evaluates data sets from the National Center for Education Statistics (NCES) for design effects of ignoring the sampling design in weighted two-level analyses. Currently, researchers may ignore the sampling design beyond the levels that they model which might result in incorrect inferences regarding hypotheses due to…

Policy shapes practice, and the increasingly important realm of professional development is no exception. In order to identify effective professional development policies and strategies, a Stanford University research team examined the policy frameworks supporting high levels of professional development activity in four states. The…

This report is the third of a three-phase research study of teacher professional learning opportunities in the United States. In this third phase of the research, the authors conducted case studies of four professionally active states to get a deeper look at the policy frameworks that support professional development in those states. These…

Several technical issues related to the Schools and Staffing Survey (SASS) were studied. The 1990-91 SASS is a set of four inter-related surveys of public and private elementary and secondary schools, districts, teachers, and administrators conducted by the National Center for Education Statistics (NCES). Preliminary analysis of the 1990-91 SASS…

The Task Force on Quality Control of the National Center for Education Statistics (NCES) was created to study the quality control procedures used for NCES publications and to determine if there are ways to improve the current procedures. Because a detailed review of the entire survey process would have been too time consuming, the Task Force…