Various factors at the individual and school levels contribute to the impairment of academic achievement. We examined whether academic class composition, measured as average class achievement and class heterogeneity (variance in achievement within class), moderates the associations of inattentiveness and hyperactivity/impulsivity with academic…

Literacy is essential to the development of any nation. Despite foreign aid to support education initiatives in Africa, high rates of illiteracy persist. This synthesis examined the extent to which early literacy intervention research has been conducted in Africa and the effects of these interventions on reading outcomes for students in…

Texts classified according to guided reading levels (GRL) are ubiquitous in US beginning reading classrooms. This study examined features of texts across three grade bands (kindergarten, early first grade, final first grade) and the 10 GRLs within these bands. The 510 texts came from three programs with different functions in beginning reading…

Extensive literature highlights positive outcomes experienced by students whose parents and teachers have strong relationships, but less is known about the factors that influence parent-teacher relationship strength. Using data from "The Impact of Grade Retention: A Developmental Approach," we identify parent-level predictors of the…

This study reports the results of a cluster RCT evaluating the impact of Enhanced Core Reading Instruction on reading achievement of grade 1 at-risk readers. Forty-four elementary schools, blocked by district, were randomly assigned to condition. In both conditions, at-risk readers received 90 minutes of whole-group instruction (Tier 1) plus an…

A one-group repeated-treatment design was used to examine the academic year and summer oral reading fluency outcomes for students attending a district-sponsored summer literacy program (N = 250). Piecewise growth models applied to longitudinal data obtained during the first and second grade and over the course of the intervening summer revealed…

The authors investigated the differential effect of retention on the development of academic achievement from grades 1 to 5 on children retained in grade 1 over 6 years. Growth mixture model (GMM) analyses supported the existence of two distinct trajectory groups of retained children for both reading and math among 125 ethnically and…

This study examined the impact of Oregon Reading First on student reading outcomes. Outcomes in schools that began Reading First implementation in 2003-2004 (Cohort A) were compared to outcomes in schools that began Reading First implementation in 2005-2006 (Cohort B). The primary hypothesis, that experienced Cohort A schools would outperform…

This study used a randomized experimental design to examine the relationship between teacher-student ratio and literacy learning outcomes for experienced intervention teachers working with the most at-risk first-grade students. Eighty-five Reading Recovery teachers, working with 170 students, each taught in a 1:1 and a small-group instructional…

This study evaluated the relative effects of Tier II computer-assisted tutoring in small groups (Team Alphie) and one-to-one tutoring provided to struggling readers in 33 high-poverty Success for All (SFA) schools. In this year-long study, struggling readers in the Team Alphie schools were tutored in groups of 6. In the control schools, students…

Given that previous findings on the social distribution of the effects of small classes have been mixed and inconclusive, in the present study I attempted to shed light on the mechanism through which small classes affect the achievement of low- and high-achieving students. I used data from a 4-year, large-scale, randomized experiment (project…

The study reported in this article investigated the differential effects of teachers on female, minority, and low-socioeconomic-status (SES) students' achievement. I used data from a 4-year, large-scale, randomized experiment (Project STAR) that was conducted between 1985 and 1989 in Tennessee, in which students and teachers were randomly assigned…

This study focused on the predictive validity of fluency measures that comprise Dynamic Indicators of Basic Early Literacy Skills (DIBELS). Data were gathered from first through third graders attending 44 schools in 9 districts or local educational agencies that made up the first Reading First cohort in Michigan. Students were administered DIBELS…

This study examined the reading performance on the Woodcock Language Proficiency Battery--Revised (WLPB-R), in Spanish and English, of 183 Spanish-speaking students in kindergarten through grade 2 in 3 schools with 4 instructional programs for English learners: structured English immersion, transitional bilingual, developmental bilingual, and dual…

A sample of 784 children with below-median literacy performance in kindergarten or at the beginning of grade 1 was assessed in 5 areas of psychological and social variables: academic competence, sociodemographic characteristics, social/emotional/behavioral characteristics, school context, and home environment. We examined the contribution of…