The effectiveness of Tier 2 interventions may depend on the variability of student skills within an intervention group. We investigated the effect of initial variability within intervention groups using data from a large-scale study of ROOTS, a Tier 2 kindergarten mathematics intervention. Our research questions were as follows: Does mathematics…

The effectiveness of Tier 2 interventions may depend on the variability of student skills within an intervention group. We investigated the effect of pretest variability within intervention groups using data from a large-scale study of ROOTS, a Tier 2 kindergarten mathematics intervention. Our research questions were as follows: Does mathematics…

Early intensive intervention has been shown to significantly affect the development of children with autism spectrum disorder. However, the costly implementation of such interventions limits their wide dissemination in the community. This study examined an integration of the Early Start Denver Model into community preschool programs for children…

Prognostic statements are a standard component of assessments for adolescents at risk for language-learning disabilities, but there is limited evidence on the validity of prognostic indicators. In two studies, we collected measures of language ability and candidate prognostic indicators from adolescents age 12 to 13. We conducted an expository…

Data from a large-scale math intervention program were used to evaluate the degree to which implementation fidelity (IF) and interventionist content knowledge were associated with student outcomes. Data were available for 33 interventionists serving 658 students in Grades 4-6 across one school year. A series of multilevel models were fit to the…

This study examined the relationship between response to intervention (RTI) implementation integrity in reading and student reading outcomes. Data were collected from 64 principals and school psychologists at 43 elementary schools. Hierarchical linear regression was used to examine the degree to which implementation of RTI tiers and key components…

The authors examined whether Reading Rescue continues to be an effective literacy intervention and factors that impact its effectiveness. Data were collected on 143 first-grade students, tutored by 104 tutors at 38 schools. There was significant growth on all foundational skills (ps < 0.001) and significant change in proportion of students…

District implementation of the response to intervention (RTI) model has occurred at a surprising rate. It appears that implementation of RTI has occurred rapidly and is being implemented with all students. Rapid implementation of RTI is occurring alongside continued controversy over the model and its intended uses. Although significant research…

This research investigated the immediate and long-term effects of a Tier 2 intervention for beginning readers identified as having a high probability of reading failure using a randomized control trial. First-grade participants (n = 123) were randomly assigned either to a 25-session intervention targeting key reading components, including…

Response to Intervention (RTI) emerged as a new service delivery model designed to meet the learning needs of all students prior to diagnosis and placement in the special education setting. The problem was few research studies had been conducted between general education teachers with intensive professional development and those without…

The compelling force behind education is improving teacher quality. This research study was designed to find out how improving teacher quality in terms of RTI knowledge occurred at differing levels of instruction and how faculty perceived the changing role of general education teachers and administrators with regard to RTI. Participants in the…

This article describes a randomized controlled trial conducted to evaluate the effects of an intensive, individualized, Tier 3 reading intervention for second grade students who had previously experienced inadequate response to quality first grade classroom reading instruction (Tier 1) and supplemental small-group intervention (Tier 2). Also…

The purpose of this study is to explore the relationship between school leadership and implementation of school-wide reforms. I chose the case of Response to Intervention (RTI), which had been adopted throughout my district. In order to explore the relationship between leadership and implementation, I sought two sets of data. First, I wanted to…

The purpose of this study was to determine the implementation status of Response to Intervention (RtI) in the elementary schools (N = 35) in one urban school district in Virginia. The relationship between the implementation of the academic components of RtI, collective efficacy, parents' trust in schools, the number of referrals for special…