WestEd: Bilingual vs. English Immersion in California

WestEd:

How should English learners be taught? What can state and local education leaders do to better support these students’ academic progress? Conclusions from a five-year evaluation have been released by a team of researchers from AIR and WestEd. The report, based on the study of 1.5 million California English learner and 3.5 million English-fluent and native-English speaking students, includes detailed findings and policy implications for education in California and nationwide. In 1998, California voters passed Proposition 227, mandating that California English learners be taught overwhelmingly in English through immersion programs not normally expected to exceed one year; bilingual instruction was to be permitted only through the granting of a special waiver. Has this been a good thing for students? The California legislature commissioned AIR and WestEd to conduct an exhaustive evaluation and provide some answers. Key findings include the following:

Via Jenny D, where there are some useful comments.