A large body of research supports the efficacy of small group reading interventions for students in Grades K through 3. However, there are few studies evaluating the effects of supplemental Tier-2 intervention implemented within a response to intervention (RTI) or multitiered systems of support (MTSS) framework. The purpose of this study was to evaluate the effects of providing Tier-2 supplemental intervention to students in Grades 1 through 3 identified as experiencing reading difficulties ( n = 318) in four elementary schools across four different school districts that were selected to participate in a state MTSS initiative. The supplemental intervention was evaluated using a regression discontinuity design, and results indicated statistically significant overall effects on measures of phonemic awareness and word decoding and no discernable effects on reading fluency and comprehension. Results suggest that supplemental reading intervention implemented within MTSS frameworks can impact key reading outcomes when intervention significantly increases instructional intensity.

Although there is widespread agreement about the practices associated with multitiered systems of support (MTSS) frameworks in beginning reading, we often underestimate the systems and infrastructure that schools need to implement and sustain these practices. The real work of developing these systems often happens in the detailed-oriented and often messy world of schedules, routines, meetings, and materials. The purpose of this article is to describe a K-3 reading initiative where school teams serving high percentages of students at risk for reading difficulties "delved into the details" to work to overcome the complexities inherent in implementing multitiered reading supports in high priority schools.

This study examines the effect of 30 min of small group explicit instruction on reading outcomes for first-grade Spanish-speaking English learners (ELs) at risk of reading difficulties. Participants were 78 ELs from seven schools who were receiving Spanish only, or Spanish and English, whole group reading instruction in first grade. Students were rank-ordered within schools and then randomly assigned to a treatment condition ( n = 39) or a comparison condition ( n = 39). Students in the treatment condition received instruction on transition elements that supported their transfer of skills from Spanish to English. Students in the comparison condition received Business as Usual instruction from a variety of commercially available programs. Findings indicated that ELs in both conditions made significant gains from pretest to posttest on all reading outcomes even though instruction in the treatment condition focused significantly more on higher order skills (i.e., vocabulary, comprehension, and transition elements) whereas instruction in the comparison condition focused significantly more on lower order skills (i.e., phonics, word work, and sentence reading). Implications for practice and future research are discussed.

Multi‐tiered Systems of Support (MTSS) frameworks are designed to directly support students with, and at risk for, disabilities by providing timely, aligned, and coordinated supports, with the goal of preventing or ameliorating the effects of early risk. Yet developing and implementing MTSS in beginning reading is a complex process. Many schools encounter common barriers to achieving full and sustained implementation of MTSS systems and practices. The purpose of this article is to describe a state K‐3 reading initiative that resulted in improved reading outcomes for K‐3 students, including students at risk for reading disabilities. Specifically, this article describes a series of tools (i.e., activity timeline, whole group and small group templates, data grouping workbook) that helped teachers in the initiative to overcome barriers in order to ensure that tiered instruction met the needs of all students, including students with, and at risk for, reading disabilities.