Interested in doing more research about bilingual education, but not sure where to start? This directory at Google.com should give you plenty of ideas.
To put bilingual education in the United States into a broader historical context, study this brief history of the subject, which traces the movement back to the middle of the 19th Century.
For further reading, here is an essay Richard Rodriguez wrote for PBS about speaking Spanish in the United States. What thematic links can you make from this reading to those found in your text?
If you’d like some starting points to research governmental and academic aspects of bilingual education, this "Electronic Textbook" will help you on your way.
Looking for a way to narrow your research topic? The National Clearinghouse for English Language Acquisition’s website offers much detailed information about state resources and policies promoting cultural understanding in schools.