The goal of this randomized controlled trial (RCT) was to evaluate the effectiveness of a small-group intervention in fractions for fifth-graders who are performing below grade level in mathematics. The impact of the fractions intervention was assessed on fifth-grade at-risk students' understanding of foundational fractions concepts and procedural…

The purpose of this efficacy study was to examine the impact of the Teacher Study Group (TSG) professional development program in vocabulary, on teacher knowledge, observed teaching practice, and student vocabulary achievement, when implemented with first grade teachers in Title 1 schools. This multi-site cluster randomized trial was implemented…

Randomized field trials were used to examine the impact of the Teacher Study Group, a professional development model, on first grade teachers' reading comprehension and vocabulary instruction, their knowledge of these areas, and on the corollary comprehension and vocabulary achievement of their students. The multi-site study was conducted during…

This study sought to examine the effects of Tier 2 intervention in a multitiered model on the performance of first- and second-grade students who were identified as having mathematics difficulties. A regression discontinuity design was utilized. Participants included 126 (Tier 2, n = 26) first graders and 140 (Tier 2, n = 25) second graders. Tier…

The purpose of this meta-analysis was to synthesize findings from 42 interventions (randomized control trials and quasi-experimental studies) on instructional approaches that enhance the mathematics proficiency of students with learning disabilities. We examined the impact of four categories of instructional components: (a) approaches to…

This independent evaluation of 2 commonly used approaches for accelerating reading achievement and reducing inappropriate special education referrals, Success for All (SFA) and Open Court, was conducted in 12 Title I schools in a large urban district in northern California. To compare the effects of these approaches, we collected data on 936 grade…

The present study examines the impact of the Direct Instruction (DI) program on the high school careers of the economically disadvantaged students who participated in the DI model of Project Follow Through. The study involves six sites: East St. Louis; New York City; Flint, Michigan; Williamsburg County, South Carolina; and Uvalde, Texas. A…

This paper reviews both the content and the methodological issues involved in the small but growing number of empirical studies on the use of Direct Instruction programs and teaching procedures with special populations. The research reviewed includes experimental and quasi-experimental work, summative evaluations of entire programs, and…

Reviews the results of a 1991 U.S. Department of Education report entitled "A Descriptive Study of Significant Features of Exemplary Special Alternative Instructional Programs." The features of nine exemplary special alternative instructional programs are described that appeared to contribute to positive outcomes for students from diverse…

A study assessed and compared the effectiveness of two distinct approaches of bilingual education used within a single school district in El Paso (Texas). The program designs, one a traditional transitional bilingual and the other a bilingual immersion, were implemented under similar conditions of resources, school year length, class size, and…