Following Messick's definition of validity as a multi-faceted construct that includes contextual, substantive, structural, generalizable, external, and consequential dimensions, this study examined an established directed self-placement (DSP) system that had been functioning for ten years at a large university. The goal was to determine the extent…

This exploratory data mining project used distance-based clustering algorithms to study three indicators of student behavioral data collectively called AB-Index, and established a typology of six types of learners for a suburban community college. The study is based on the notion that student behavioral data are a good basis for new ways of doing…