This meta-analysis reviews research on the achievement effects of comprehensive school reform (CSR) and summarizes the specific effects of 29 widely implemented models. There are limitations on the overall quantity and quality of the research base, but the overall effects of CSR appear promising. The combined quantity, quality, and statistical significance of evidence from three models, in particular, set them apart. Whether evaluations are conducted by developers or by third-party evaluators and whether evaluators use one-group pre-post designs or control groups are important factors for understanding differences in CSR effects. Schools that implemented CSR models for 5 years or more showed particularly strong effects, and the benefits were consistent across schools of varying poverty levels. A long-term commitment to research-proven educational reform is needed to establish a strong marketplace of scientifically based CSR models.

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This article presents findings from a 4-year study of 13 culturally and linguistically diverse elementary schools implementing comprehensive school reform (CSR) models. The study focused on: (a) the actions at the state and district levels that facilitated or inhibited reform implementation; (b) the adaptability of the various reforms in multicultural, multilingual contexts; and (c) the student achievement outcomes associated with reform, for schools as a whole and for language minority students in particular. Some schools implemented reforms and bilingual education programs in mutually supportive ways; others had difficulty adapting reforms to suit the needs of Limited English Proficient (LEP) students. Reforms generally helped educators meet goals for multicultural education, but in some cases, educators’ beliefs about student ability, race, and language served as constraints to reform. Students from CSR schools had achievement outcomes that were generally equivalent to those for students from matched comparison schools. Under some circumstances, though, LEP students and their English-speaking peers from CSR schools outperformed their comparison school counterparts.

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