School-based evaluations of interventions are increasingly common in education research. Ideally, the results of these evaluations are used to make evidence-based policy decisions for students. However, it is difficult to make generalizations from these evaluations because the types of schools included in the studies are typically not selected…

Guidelines for protection of human subjects in survey research demand that research designs provide for subjects'"informed consent." This paper reports procedures employed within a study of marijuana and other drug use which were in compliance yet avoided problems of nonparticipation and the gathering of inaccurate information. (Author)

Meta analysis refers to the synthesis of research findings in which results of multiple studies are compared, contrasted, and reanalyzed. Benefits of meta analysis to the field of health research include: (1) the transformation of diverse findings into a common metric; and (2) improvement of research techniques and reports. (JN)

There is little research on English language learners (ELLs) in relation to learning disability (LD) assessment and identification. More important, there is a scarcity of research on models and strategies that enhance learning opportunities and outcomes for ELLs prior to an LD diagnosis. We describe in this article an innovative language…

Recruiting schools and kids to participate in drug prevention evaluations is no longer, if it ever was, a "done deal." Since the mid-1980s, schools have been inundated with requirements for drug programs and requests to cooperate with program evaluations. As a consequence, both treatment and control schools are harder to find. In addition, many…