Debate is occurring about which result interpretation aides focused on examining the experimental effect should be used in single-subject experimental research. In this study, we examined seven nonoverlap methods and compared results using each method to judgments of two visual analysts. The data sources for the present study were 36 studies…

In this article, I specify a conceptual framework for test validity research on content assessments taken by English language learners (ELLs) in U.S. schools in grades K-12. This framework is modeled after one previously delineated by Willingham et al. (1988), which was developed to guide research on students with disabilities. In this framework…

The purpose of this article is to illustrate how a valid and reliable state accountability system could be developed that identifies effective schools and school districts in a comprehensive, understandable, and practical way. The author presents an overview of the strategy used in the analysis, discusses the use of education production functions…

This article provides a typology of reasons for conducting mixed-methods research in special education. The mixed-methods research process is described along with the role of the rationale and purpose of study. The reasons given in the literature for utilizing mixed-methods research are explicated, and the limitations of these reason frameworks…

This report summarizes findings from a study of the psychometric properties of the resilience and youth development module, a key component of the Healthy Kids Survey. The study aims to improve resilience assessment and research so that educators can shape the school environment to promote academic resilience. The Healthy Kids Survey (HKS) is a…