Background: The relation between academic self-concept and achievement has been examined in a large number of studies. The majority of these studies have found evidence for a reciprocal effects model. However, there is an ongoing debate on how students' achievement should be measured and whether the type of achievement indicator (grades, tests,…

This paper examines how controlling statistically for baseline covariates (especially pretests) improves the precision of studies that randomize schools to measure the impacts of educational interventions on student achievement. Part I of the paper introduces the concepts, issues, and options involved. Parts II and III present empirical findings…

This is the first book to present a practical, problem-solving approach and hands-on tools and techniques for assessing English-language learners and culturally diverse students in K-12 settings. It meets a crucial need among practitioners and special educators working in today's schools. Provided are research-based, step-by-step procedures for…