The motivation for this paper is the authors' recent work on several randomized control trials in which they found the primary result, which averaged across subgroups or sites, to be moderated by demographic or site characteristics. They are led to examine a distinction that the Institute of Education Sciences (IES) makes between "confirmatory"…

Twenty-four studies were included in this systematic review of vocabulary research literature. The review corroborates the findings of past studies that several strategies have emerged that increase students' vocabulary knowledge. Findings further reinforce the National Reading Panel's recommendations regarding the context and magnitude of studies…

Research concerning children is often presented with only a brief comment on the research methods adopted. This paper takes a "behind the scenes" view and I discuss my adoption of a non-hierarchical "least adult role" adapted from Mandell's work in 1991 to undertake qualitative research in the sensitive area of children's…

Interactions between conceptual and procedural knowledge influence the development of mathematical competencies. However, after decades of research, these interrelations are still under debate, and empirical results are inconclusive. The authors point out a source of these problems. Different kinds of knowledge and competencies only show up…

This study compares three variations in how researchers construct middle childhood social networks: (1) with "friendships" or "affiliations" as a relational tie; (2) with children providing "self reports" of relationships, or in addition, "multi-informant reports" of relationships in which they are not involved; and (3) whether network computation…

Nonrandom assignment of students to teachers can bias value-added estimates of teachers' causal effects. Rothstein (2008, 2010) shows that typical value-added models indicate large counterfactual effects of fifth-grade teachers on students' fourth-grade learning, indicating that classroom assignments are far from random. This article quantifies…

This guide summarizes "Effective Programs for Struggling Readers: A Best Evidence Synthesis," a research review conducted by Johns Hopkins University's Center for Research and Reform in Education. The purpose of the review was to evaluate the achievement outcomes of alternative approaches for struggling readers in grade K-5: (1) one-to-one…

The importance of research in professional and personal development is increasingly being acknowledged. So why should children not benefit in a similar way? Traditionally, children have been excluded from this learning process because research methodology is considered too difficult for them. Principal obstacles focus around three key barriers:…

In this paper we analyze the impact of classroom peers on individual student performance with a unique longitudinal data set covering all Florida public school students in grades 3-10 over a five-year period. Unlike many previous data sets used to study peer effects in education, our data set allow us to identify each member of a given student's…

I estimate the impact of attending a magnet school on student achievement in mathematics in a moderately large Southern district. Admission to magnet schools is through lotteries. Actual attendance by lottery winners is of course voluntary. I use lottery outcomes as instruments to control for bias due to self-selection of enrollees. Because…

Background/Context: Technological and economic changes have put a high premium on developing students' information literacy and research skills. Previous attempts to deploy educational technology toward these ends have proved disappointing because K-12 teachers have difficulty integrating shared computers into instruction. In response, numerous…

The KIPP (Knowledge Is Power Program) Diamond (Daring Individual Achievers Making Outstanding New Dreams) Academy, housed in Cypress Junior High School in Memphis, Tennessee, opened in the summer of 2002. KIPP goals include enhancement of academic achievement and promotion of positive student leadership through an innovative redesign of…