Since approximately 1988, the literacy achievement gap has remained stagnant in the United States. Despite data that suggest desegregation efforts have been most impactful on closing this gap, contemporary intervention efforts have often taken the form of homogeneous ability grouping and tracking, practices that lead to segregation along racial,…

Differentiation in education can be seen as a means of responding to student diversity in order to meet the vision of "a school for all." Differentiation has been widely addressed within a western context, and it appears to be a versatile phenomenon as it occurs under various guises and with a variety of terms and modes of…

Differentiated instruction (DI) is a beneficial approach to addressing students' diverse learning needs, abilities, and interests to ensure that each student has the opportunity to make academic progress. To answer the question of how teachers utilize DI in K-12 classrooms, this systematic review was based on 61 empirical studies on DI published…

Empirical research on advanced literacy skills among students in elementary and middle school, and on literacy instruction related to such skills, was reviewed to map current scientific knowledge on the topic, and to map identification methods and terms used to describe these students. A comprehensive search in three databases was conducted.…

School district administrators must address structural racism and inequitable access to advanced learning opportunities in their school districts. District administrators in one large district in the northwestern part of the United States sought research-based advice by asking the authors to provide the answer to the "million-dollar"…

Ability grouping of students into separate classes within a school can be called 'between-class ability grouping'. This practice has persisted in Australia despite evidence that it is socially inequitable and does not improve academic outcomes. A systematic review of peer-reviewed literature about between-class ability grouping in Australia from…

Since there has been no clear overview of educational practices that benefit high-ability students in mixed-ability classrooms in grades one to six, this review aims to provide insight into the effects of educational practices on the cognitive and affective-motivational learning outcomes of high-ability students. In order to identify these…

Two second-order meta-analyses synthesized approximately 100 years of research on the effects of ability grouping and acceleration on K-12 students' academic achievement. Outcomes of 13 ability grouping meta-analyses showed that students benefited from within-class grouping (0.19 = g = 0.30), cross-grade subject grouping (g = 0.26), and special…

This article reviews the international literature about streaming and the effects of this practice on the learning outcomes for secondary school students in Australia. Streaming in secondary schools across Australia has again increased in popularity after more than a century of literature that often discourages the practice. This article discusses…

I gathered 77 randomized experiments (with 111 treatment arms) that evaluated the effects of school-based interventions on learning in developing-country primary schools. On average, monetary grants and deworming treatments had mean effect sizes that were close to zero and not statistically significant. Nutritional treatments, treatments that…

This report reviews over 200 pieces of research to identify the elements of teaching with the strongest evidence of improving attainment. It finds some common practices can be harmful to learning and have no grounding in research. Specific practices which are supported by good evidence of their effectiveness are also examined and six key factors…

Academic tracking is a common practice in American high schools. While its impact on the lives of teachers and students is well documented, few studies pay close attention to the criteria used to determine high school students' academic trajectories or how teachers select and apply these criteria. This review, which examines the types of…

In the field of educational effectiveness research, the influence of a class' student body on students' individual achievement scores has been a popular research interest for many years. Yet, few studies have focussed on the effects of class composition on students' non-achievement outcomes, and up to now, hardly any attempts have been made to…

This document presents a review of evidence commissioned by the Education Endowment Foundation to inform the guidance document "Improving Mathematics in Key Stages Two and Three" (Education Endowment Foundation, 2017). The review draws on a substantial parallel study by the same research team, funded by the Nuffield Foundation, which…

This article describes a grounded theory constructed from a study of Singapore neighbourhood secondary school principals' engagement of their lowest stream, the Normal Technical students, in their schools. This substantive theory is labelled the "theory of selective engagement". It implies that how principals engage their lowest streamed…