In recent years, children and adolescents have spent more time sitting and engaging in less physical activity than recommended by health authorities. Despite widespread efforts to promote physical activity through school-based programs, the impact of specific intervention programs often remains untested. Therefore, in this pilot study, the effects…

By 2013, all 50 states and the District of Columbia had adopted college- and career-ready standards in English language arts and mathematics, placing a greater emphasis on argument writing to prepare students for life after high school. Solving the specific problem of how to help teachers teach to new standards for argument writing as well as the…

Big Brothers/Big Sisters is a national program aimed at providing mentors for disadvantaged children. This study tested whether Big Sister mentors could be trained to increase communication with their Little Sisters about sexual health issues. The study tested an intervention based on social cognitive theory in which a sexual health communication…

This report addresses the following four questions by reporting on the impacts of Head Start on children and families during the children's preschool, kindergarten, and 1st grade years: (1) What difference does Head Start make to key outcomes of development and learning (and in particular, the multiple domains of school readiness) for low-income…

The Randomized Control Trials (RCT) design and its quasi-experimental kissing cousin, the Comparison Group Trials (CGT), are golden to some and not even silver to others. At the center of the affection, at the vortex of the discomfort, are beliefs about what it takes to establish causality. These designs are considered primarily when the purpose…

This paper presents findings of a study that examined the effectiveness of the guidance program used by change agents in the Dutch School Improvement Project (NSIP) on program implementation. Sixteen schools composed the experimental group and 13 made up the control group. The experimental variable was the guidance strategy of the NSIP. The two…

Follow Through is a longitudinal program instituted by the U.S. Office of Education in which a variety of curriculum models have been implemented in a number of locations nationwide. Because services are provided from kindergarten through third grade, many children enter and leave the program at points not coterminous with the treatment itself.…

Evaluations of social programs based upon quasi-experimental designs are typically plagued by problems of nonequivalence between the experimental and comparison group prior to the experiment. In such settings it is extremely difficult, if not impossible, to isolate the effects of the program from the confounding effects associated with the…

This discussion of educational technology and the role of computers is based on the author's experiences with the United Kingdom's National Development Programme in Computer Assisted Learning (NDPCAL). Highlights include curriculum development; teachers' roles; research and development; evaluation; control group experiments; instructional…

The National Job Corps Study has been conducted since 1993 to provide Congress and program managers with the information they need to assess how well Job Corps attains its goal of helping students become more responsible, employable, and productive citizens. The cornerstone of the study was the random assignment of all youths found eligible for…

The National Job Corps Study was conducted in 1994-1996 to provide a thorough and rigorous assessment of the impacts of the Job Corps on key participant outcomes. To ensure that the study was well implemented, a study team from Mathematica Policy Research, Inc., (MPR) investigated outcome and admission (OA) procedures in each Job Corps region and…