The purpose of this issue of "New Directions for Evaluation" is to examine, comparatively, the practical application of theorists' approaches to evaluation by examining four evaluations of the same case. The thought is that when asked to evaluate the same program (holding the case constant), the practical distinctions between theorists' approaches…

Results of a National Research Council review of two major bilingual education studies are presented. The two studies were a national longitudinal study of the effectiveness of instruction of limited-English-proficient students and a study comparing three bilingual education program types (immersion, early exit, and late exit). The report contains…

This volume offers a systematic review of the literature on communication education and instruction. Making meta-analysis findings accessible and relevant, the editors of this volume approach the topic from the perspective that meta-analysis serves as a useful tool for summarizing experiments and for determining how and why specific teaching and…