This descriptive case study is a qualitative investigation into the perceptions of tenth grade students who experienced a ninth-grade transitional model high school academy within a large PreK-12 suburban school district. Specifically, this study provided the opportunity to examine the success of one Ninth Grade Academy, identify areas of concern…

A focus of reforms in standards, learning environments, teacher preparation programs and professional development is to support teachers' and students' engagement with scientific practices such as argumentation, modeling and generating explanations for real-world phenomena (NRC, 2011). Engaging in these practices in authentic ways…

The transgender (TG) community has become more visible, both individually and collectively. The counseling professions, not unlike other professions, have lagged behind in their understanding of this population and their culture, an act that perpetuates stereotypes and supports unequal treatment. Among the many barriers faced by transgender…

This applied dissertation was designed to provide perceptual teacher data as well as summative testing data to educational leaders concerning the effects of implementing Investigations in Number, Data, and Space® (Investigations) in three Title I elementary school settings, two Title I schools, and one non-Title I school. Data collected during…

This research serves as a mixed methodological study that presents a conceptual framework which focuses on the relationship between professional learning communities, high yield literacy strategies, and their phases of change. As a result, the purpose of this study is threefold. First, a conceptual framework integrating professional learning…

Writing and the power of the written word is a very important aspect of our literate society and writing is integrated into all aspects of our daily life. Good writing skills are paramount in social and educational institutions where textual production and related writing activities represent the main framework for knowledge production and…

Although a number of past studies have been aimed at characterizing iron's redox properties in aqueous systems and its contribution to natural attenuation processes of groundwater contaminants, many questions remain. It is especially important to understand the molecular properties that control the reactivity of both Fe[superscript II] and…

Over the past decades, network technologies across supply chains have been introduced and promoted with the premised benefits for all participants. However industry experience with an adoption process of some technology suggests that some firms have a great amount of uncertainty in estimating the benefits of its adoption. This uncertainty will…

This study investigated relationships among teacher practices, student motivation and student achievement on standardized mathematics assessments using an Achievement Goal Theory framework. From 2006 through 2009, 800 public school students participated in mathematics assessments and completed surveys measuring perceptions of teacher practices and…

This study investigates the effect of fitting a unidimensional IRT model to multidimensional data in content-balanced computerized adaptive testing (CAT). Unconstrained CAT with the maximum information item selection method is chosen as the baseline, and the performances of three content balancing procedures, the constrained CAT (CCAT), the…

The tremendously huge volume of biomedical literature, scientists' specific information needs, long terms of multiples words, and fundamental problems of synonym and polysemy have been challenging issues facing the biomedical information retrieval community researchers. Search engines have significantly improved the efficiency and effectiveness of…

This dissertation proposes a new factor-analytic technique for detecting cheating on exams. Person-fit statistics have been developed to assess the extent to which examinees' response patterns are consistent with expectation, with expectation defined in the context of some model. Response patterns that are inconsistent with expectation are said to…

In DIF studies, a Type I error refers to the mistake of identifying non-DIF items as DIF items, and a Type I error rate refers to the proportion of Type I errors in a simulation study. The possibility of making a Type I error in DIF studies is always present and high possibility of making such an error can weaken the validity of the assessment.…

This study involved the investigation of the effects of the Total Cluster Grouping Model on the achievement and identification of urban, elementary students and to learn about the classroom practices of and perceptions classroom teachers had of their students' ability levels over the course of the study. Proportionality of representation in…

The primary concern in current interaction design is focused on how to help users solve problems and achieve goals more easily and efficiently. While users' sufficient knowledge acquisition of operating a product or system is considered important, their acquisition of problem-solving knowledge in the task domain has largely been disregarded. As a…