Which act requires schools to implement bilingual education under certain circumstances?

The correct response highlights a significant legal case that fundamentally shaped the educational rights of English Language Learners (ELLs). The Lau v. Nichols ruling in 1974 established that schools must provide appropriate educational services to ensure that non-English speaking students have equal educational opportunities. It identified that the lack of support for ELLs amounted to discrimination, which then necessitated the implementation of effective language assistance programs, including bilingual education when appropriate.

This case emphasizes the importance of addressing the language needs of learners, which can come in various forms, including bilingual education, to help bridge the gap between different languages in a classroom setting. Understanding this background reinforces the obligation of schools to create a conducive learning environment for all students, especially for those acquiring proficiency in English. The other acts and cases listed either address broader educational policies or specific immigration issues rather than focusing on bilingual education mandates.