Analyses that reveal how treatment effects vary allow researchers, practitioners, and policymakers to better understand the efficacy of educational interventions. In practice, however, standard statistical methods for addressing heterogeneous treatment effects (HTE) fail to address the HTE that may exist "within" outcome measures. In…

Instructional coaching has been implemented in schools to improve student achievement; however, literature shows a lack of evidence of the efficacy of improving student reading achievement. The problem addressed in this study was that school districts have implemented instructional coaching to improve student reading achievement, but the…

Curriculum Associates' "i-Ready® Personalized Instruction" ("i-Ready") is a supplemental, online personalized instruction program available for reading and mathematics. Prior research has indicated "i-Ready" has a positive impact on K-8 student achievement for students overall (e.g., Swain, Randel, & Norman…

Curriculum Associates' "i-Ready® Personalized Instruction" ("i-Ready") is a supplemental, online personalized instruction program available for mathematics and reading. Prior research has indicated "i-Ready" has a positive impact on student achievement for students overall (e.g., Swain, Randel, & Norman Dvorak,…

The development of spelling skill is an intricate process for children with or at risk of Specific Learning Disabilities and requires targeted interventions. This problem exacerbates in the Greek orthographic system owning to its high complexity. The current study presents a novel spelling intervention program for Greek 3rd graders at risk of…

The No Child Left Behind Act resulted in increased school-level implementation of assessment-based school interventions that aim to improve student performance. Diagnostic assessments are included among these interventions, designed to help teachers use evidence about student performance to modify and differentiate instruction and improve student…