This study compared the effects on reading outcomes of delivering supplemental, small-group intervention to first-grade students at risk for reading difficulties randomly assigned to one of three different treatment schedules: extended (4 sessions per week, 16 weeks; n = 66), concentrated (4 sessions per week, 8 weeks; n = 64), or distributed (2…

We provide data 3 to 4 years postintervention for four samples of English language learners from two sequential Grade 1 cohorts who received supplemental Grade 1 reading interventions in Spanish or English and for whom the language of instruction for intervention was matched with language of core reading instruction. Participants were 300 students…

The major purposes of this study were to assess the efficacy of tutoring to remediate 3rd-grade computational deficits and to explore whether remediation is differentially efficacious depending on whether students experience mathematics difficulty alone or concomitantly with reading difficulty. At 2 sites, 127 students were stratified on…