The Conover Solution is a nonparametric method used to analyze relative growth in students' achievement on state tests administered on two or more occasions. However, there has been very little research assessing the robustness of this method in the presence of missing data. Using vertically scaled and non-vertically scaled data from the math…

The relationships between response to intervention (RTI) data, cognitive ability, academic achievement, identification methods, and specific learning disability (SLD) identification have been studied extensively in recent years; however, an empirically supported method of identifying a learning disability has yet to be agreed upon. Without a…