The purpose of this study was to investigate the response of kindergarten students at-risk for reading failure to a two-tiered vocabulary intervention delivered in the context of a shared storybook reading activity employing rich and robust vocabulary instruction. Rich vocabulary instruction is defined as explicit vocabulary instruction in which…

Using a cluster randomization design, schools were randomly assigned to implement Success for All, a comprehensive reading reform model, or control methods. This article reports final literacy outcomes for a 3-year longitudinal sample of children who participated in the treatment or control condition from kindergarten through second grade and a…