The extent to which teachers implement evidence-based practices, such as explicit instruction, is critical for improving students' mathematics achievement. The purpose of this study was to examine the effect of the kindergarten "Early Learning in Mathematics" (ELM) curriculum on teachers' use of explicit mathematics instruction in core…

This article examines the efficacy of a multitiered systemic reading intervention for increasing the intensity and quality of explicit literacy instruction that teachers provide in first-grade classrooms. Schools ("j" = 16) were randomly assigned to the treatment or comparison condition. In both conditions, teachers ("i" = 42)…

This article presents findings of an efficacy trial examining the effect of a multitiered instruction and intervention model on first grade at-risk students' reading outcomes. Schools (N = 16) were randomly assigned to the treatment or control condition. In the fall of Grade 1, students were assigned to an instructional tier on the basis of…

The purpose of this research was to investigate the impact of tier 2 instruction on the comprehension and vocabulary of first grade students identified with low language and vocabulary skills. Specifically, the authors conducted a pilot study within the context of federally funded efficacy research to examine whether students participating in…