Studied the longitudinal impact of a maintenance bilingual education program on the development of English in Spanish-speaking Mexican-American children in grades K-2. Subjects who were limited in both Spanish and English proficiency gained more in English achievement than those who were fluent in Spanish but not in English. (KS)

The acquisition of English and Spanish was examined among 298 Mexican-American students who were limited-English-proficient at the start of kindergarten and who participated in maintenance bilingual programs in grades K-3. Oral proficiency in both languages increased for both boys and girls and across groups that had differed in early Spanish…