Bayesian latent change score modeling (LCSM) was used to compare models of triannual (fall, winter, spring) change on elementary math computation and concepts/applications curriculum-based measures. Data were collected from elementary students in Grades 2-5, approximately 700 to 850 students in each grade (47%-54% female; 78%-79% White, 10%-11%…

In "Endrew F. v Douglas County School District RE-1," the U.S. Supreme Court affirmed the requirement that schools provide special education services designed to confer educational benefit that is more than de minimis. "Endrew" offers an opportunity for the special education community to consider whether students with learning…

As implementation of multi-tiered systems of support becomes common practice across the nation, practitioners continue to need strategies for intensifying interventions and supports for the subset of students who fail to make adequate progress despite strong programs at Tiers 1 and 2. Experts recommend making several changes to the structure and…

Many states are implementing response-to-intervention (RTI)-based assessment as the sole means of identifying students with specific learning disabilities (SLDs). Although RTI is often hailed as an improved model of identification, concern for the possibility of this model elevating false positives has been examined. The risk of RTI producing a…

The purpose of this article was twofold: (1) to explore the feasibility of the regression discontinuity design (RDD) in response-to-intervention implementation research and (2) to expand upon the limited research on vocabulary instruction for kindergarten students who are at risk for reading failure due to limited vocabularies. This pilot study…

Writing performance for a large number of adolescents, with and without learning disabilities (LD), in the United States is below the level required for success in college and in the world of work. Despite the importance of writing and students' with LD documented difficulties in this academic domain, writing intervention research for adolescents…

We present an analysis of the current state of practice in the diagnosis and treatment of learning disabilities (LD) in Israel. Through an examination of the cultural, historical, and demographic background of the country ("deep structures"), we show how a fragmented society has developed; it segregates different ethnicities and social…