A central problem in the application of exploratory factor analysis is deciding how many factors to retain ("m"). Although this is inherently a model selection problem, a model selection perspective is rarely adopted for this task. We suggest that Cudeck and Henly's (1991) framework can be applied to guide the selection process.…

There is a discrepancy currently in public schools when comparing the identification and instruction of underachieving students with gifted and talented (GT) students. A three-tiered identification and instructional model was developed out of the Individuals With Disabilities Education Improvement Act (2004) with emphasis coming from the No Child…

The primary purpose of this study was to determine whether the data from the qualitative study fit Rasch model requirements for the definition of a measure, as well as to address concern in the extant literature regarding the appropriate number of items needed in analysis to assure unidimensionality. The self-report victimization scale was…

The purpose of this study was to evaluate the sensitivity of growth and value-added modeling to the way an underlying vertical score scale has been created. Longitudinal item-level data were analyzed with both student- and school-level identifiers for the entire state of Colorado between 2003 and 2006. Eight different vertical scales were…

Most growth models implicitly assume that test scores have been vertically scaled. What may not be widely appreciated are the different choices that must be made when creating a vertical score scale. In this paper empirical patterns of growth in student achievement are compared as a function of different approaches to creating a vertical scale.…

Background: Expeditionary Learning Schools opens and transforms K-12 schools. Through engaging, long-term interdisciplinary projects designed to achieve academic standards and an emphasis on a healthy school culture, Expeditionary Learning aims to develop students who are not only high-achieving but also highly motivated to do challenging…

A common theme in educational change literature is that principals do not truly understand the change process and therefore cannot successfully implement change. This paper presents findings of a study that examined the change processes that Colorado principals utilized when initiating and implementing change in their buildings. The study also…

Several problems exist with the rural knowledge base as it is traditionally conceived: (1) there is no useful rural definition with the diverse rural reality; (2) rural is undervalued as reflected in teacher education and training and in the stereotyping of regions in the country; (3) issues of sparsity, scarcity and size are disregarded, and (4)…