In this paper, we investigate two purported problems with Bayesian Knowledge Tracing (BKT), a popular statistical model of student learning: "identifiability" and "semantic model degeneracy." In 2007, Beck and Chang stated that BKT is susceptible to an "identifiability problem"--various models with different…

Card and Giuliano's National Bureau of Economic Research (NBER) working paper on universal screening is discussed. This commentary provides a brief summary and critique of the article, proposes an explanation of the results in light of the author's research on the role of nominations or screening tests in the gifted identification process, and…

In this commentary of "Evaluating the Gifted Program of an Urban School District Using a Modified Regression Discontinuity Design" by Davis, Engberg, Epple, Sieg, and Zimmer, we examine the background of the study, critique the methods used, and discuss the results and implications. The study used a fuzzy regression discontinuity design…

For the 2014 study, "A Randomized Trial Examining the Effects of Aerobic Physical Activity on Attention-Deficit/Hyperactivity Disorder Symptoms in Young Children", researchers examined the effect of a daily before-school physical activity program on behavioral outcomes of students in grades K-2. The study sample included 202 students who…

The combination of features in virtual worlds provides an opportunity to implement and research unique learning experiences. With increasing interest and activity from the educational research community, exploring virtual worlds for teaching and learning, there is a need to identify and understand the ethical implications of conducting research in…

Research Findings: This essay offers a review of challenges that university laboratory preschools face in providing a site for research that fits with other components of the program mission. An argument is made to consider paradigm shifts in research questions and methods that move away from traditions within the fields that study children's…

The call for practice on the basis of evidence is slowly impacting the link between research and practice. Accompanying the call for evidence-based practice, concerns have been raised about constructing research questions that address the reality of applied settings, as well as arguments for including additional measures to ensure the internal and…

The Education Trust research report "Stuck Schools" suggests a framework for identifying chronically low-performing schools in need of turnaround. The study uses Maryland and Indiana to show that some low-performing schools make progress while others remain stagnant. The report has four serious problems of reliability and validity,…

This paper addresses neglected questions in item response theory (IRT): measurement of ability or trait parameters and item difficulty in the Rasch model; measurement of individual change based on a Rasch test; and the general framework for detection of differential item functioning under the Mantel-Haenszel procedure. (SLD)

Effective schools are typically defined as those schools which improve or maintain already-established high levels of student achievement. A number of issues and research needs are raised which relate to the identification of effective schools. Unless the nature of "effectiveness" can be described and agreed upon, researchers face the possibility…

The U.S. Census Bureau conducts the Schools and Staffing Survey (SASS) for the National Center for Education Statistics (NCES). The SASS is a set of integrated self-administered surveys designed to obtain national information on all aspects of the school system. The Teacher Listing Form (TLF) is the first in the SASS series. It is sent to the…

African American students are disproportionately likely to be identified with the emotional disturbance (ED) education disability. To investigate how teachers' perceptions of students might vary by race, we analyzed Black and White teachers' ratings of 769 students with ED, subdivided by race and grade level, on six emotional and behavior problem…