Which directive states that districts must rectify language deficiencies for ELL students?

The correct choice emphasizes the importance of the May 25 Memo, which was issued by the Department of Education in 1974. This memo specifically states that school districts must take action to rectify language deficiencies for English Language Learner (ELL) students. It outlines the responsibility of educational institutions to ensure that ELL students have equal access to educational opportunities by providing necessary support, such as language assistance programs.

The directive places a legal obligation on schools to identify and address the needs of ELL students, thereby promoting educational equity and ensuring that language barriers do not hinder their academic progress. This commitment to supporting language development aligns with the broader goals of fostering inclusivity and diversity within the educational system.

In contrast, other options such as the Civil Rights Act of 1964 address broader civil rights issues without specifically focusing on language deficiencies in education, while the Language Rights Act and Transculturation Guidelines do not directly reference the specific requirements for districts to support ELL students in the same way as the May 25 Memo does.