Research was conducted to consider in detail the intergenerational dimensions of bilingualism in the Puerto Rican community in New York City via the children of adult immigrants who had abandoned their native language usage and who later revived it. The issues in focus are language choice, language change, language use, and language learning. The report follows the chronological progression of the research. Its chapters cover the following topics: (1) the historical background of the community and school system; (2) the methodology of the project, the children in the sample, an examination of the children's linguistic behavior through ethnographic techniques, and a comparison of their language use to that of their parents; (3) an attitudinal survey and comparison of attitudes of children and their parents and teachers toward language varieties and bilingual education; (4) examination of children's performance on various tests; (5) quantitative sociolinguistic studies of particular phenomena which are examined from an intergenerational perspective; (6) a comparison of children's and adults' behavior with regard to code switching and an indication of certain developmental patterns; and (7) a summary which emphasizes educational and policy implications of the findings. (AMH)