Bilingual Education if done right can be wonderful and result in a child fluent in both their native language, as well as English.  When bilingual education is done badly, the child is not fluent in either language.  In California a proposition was passed getting rid of most bilingual education because the majority of voters felt the students were not learning English.
Illinois to require bilingual preschool programs for students who don't speak English - chicagotribune.com

Labels: Bilingual History in the US, bilingualism