Most randomized field experiments experience some attrition. Moreover, the extent of attrition may differ by treatment condition in systematic, non-random ways, biasing estimates of treatment effects and contributing to invalid inferences. We address concerns about non-random attrition by quantifying the conditions necessary in the attritted data…

This study sought to determine whether there was correlation between a superintendent's use of a transformational leadership and levels of collective teacher efficacy. Four research questions were answered in this study: Is there a statistically significant correlation between collective teacher efficacy and school district superintendents'…

Addressing cognitive disparities has become a paramount concern in computational thinking (CT) education. The intricate and nuanced relationships between CT and cognitive variations emphasize the needs to accommodate diverse cognitive profiles when fostering CT skills, recognizing that these cognitive functions can manifest as either strengths or…

This study aims at highlighting the relationship between mastery learning models and academic performance in mathematics, moderated by the number of hours allotted to studying mathematics. There are 305 first to eighth-grade students who learn at "Nae A. Ghica Middle School" in Romania. Students in sixth, seventh, and eighth grades…

Many experimental designs in educational and behavioral research involve at least one level of clustering. Clustering affects the precision of estimators and its impact on statistics in cross-sectional studies is well known. Clustering also occurs in longitudinal designs where students that are initially grouped may be regrouped in the following…

This study sought to determine whether there was a statistically significant correlation between school board behaviors and characteristics, and a superintendent's use of a transformational leadership model. The study was grounded in four research questions: Is there a statistically significant correlation between board behaviors and…

School accountability systems increasingly hold schools to account for their performances using value-added models purporting to measure the effects of schools on student learning. The most common approach is to fit a linear regression of student current achievement on student prior achievement, where the school effects are the school means of the…

The ongoing literacy crisis in the U.S. highlights an urgent need for effective, scalable literacy instruction. REED Charitable Foundation (RCF) is a non-profit organization that provides structured literacy training informed by Orton-Gillingham, along with ongoing professional coaching and comprehensive implementation support to help all students…

As a replication in the Chinese context of previous aptitude testing validation studies, this research aims at exploring the validity of an interpreting aptitude test battery, composed of the Logical Memory Test (LMT), the Scale of Language Anxiety (SLA) and the Achievement Motivation Test (AMT), in the prediction of consecutive interpreting…