A primary purpose of cognitive diagnosis models (CDMs) is to classify examinees based on their attribute patterns. The Q-matrix (Tatsuoka, 1985), a common component of all CDMs, specifies the relationship between the set of required dichotomous attributes and the test items. Since a Q-matrix is often developed by content-knowledge experts and can…

This three-article dissertation examined how policy choices in three key policy areas -- initial enrollment, service provision, and reclassification -- impact English learner (EL)-classified students. The first article examined the national landscape of state statutes, regulations, and state education agencies' (SEA) guidance that support…

The purpose of this mixed methods study was to find out the ways in which web enhanced language learning (WELL) technologies are learned that make them more likely to be effectively integrated into the K-12 classroom. Specifically, the study investigated characteristics of WELL teacher training that translate to effective classroom implementation.…

This dissertation is a qualitative, single case study of an international school in Brazil that explores how school administrators and teachers conceptualize international mindedness, and how it is developed within the curriculum of the International Baccalaureate Diploma Program. I provide a rich description of the context, developing four themes…

This qualitative phenomenological research study used narrative inquiry to investigate rural superintendents' experiences with the application of principle-centered leadership in their districts. Ten superintendents from rural districts in east Texas were interviewed. Narratives were analyzed by organizing, describing, classifying, and…

In an educational landscape where teacher evaluation methods are increasingly discussed and scrutinized in research offices, legislatures, and school buildings, the differences in policy and instrumentation among states and school districts can paint a confusing picture of these varying methods and their impacts. To help assess the picture in…

The 21st century learner resides in an advanced global society that is led by the waves of the economy, advances in the technological world, concern around our safety and security, as well as demographical changes (Carver & Markatos-Soriano, 2007). The trends suggest education needs to equip students with the attitudes that promote respect for…

Thinking skills have long been regarded as an essential outcome of the educational process. Yet, research shows that the teaching of thinking skills in K-12 education does not follow a coherent path. Several factors affect the teaching and use of thinking skills in the classroom, with teacher knowledge and beliefs about thinking skills among the…

Over the past decade, educational policy trends have shifted to a focus on examining students' growth from kindergarten through twelfth grade (K-12). One way states can track students' growth is with a vertical scale. Presently, every state that uses a vertical scale bases the scale on a unidimensional IRT model. These models make a…

Changes to state tests impact the ability of State Education Agencies (SEAs) to monitor change in performance over time. The purpose of this study was to evaluate the Standardized Performance Growth Index (PGIz), a proposed statistical model for measuring change in student and school performance, across transitions in tests. The PGIz is a…

The purpose of this study was to determine whether students with identified behavioral needs were provided a different level of behavioral intervention based on their special education disability category verification. A second purpose of this study was to determine what caused potential differences as interpreted by individuals working in the…

Stakeholders of the educational system assume that standardized tests are transparently about the subject content being tested and therefore can be used as a metric to measure achievement in outcome-based educational reform. Both analysis of longitudinal data for the Texas Assessment of Knowledge and Skills (TAKS) exam and agent based computer…