 The Lau v. Nichols ruling of 1974 further affirmed a student’s right to educational opportunity via appropriate instructional services (Calderón, 2000).Schools were now charged with the mission to implement programs suitable to the needs of their language minority students.The number of dual immersion programs remained relatively low throughout the mid-1980s, but later, more attention was given to the need to provide challenging, yet comprehensible (Calderón, 2000), instruction to English language learners (ELLs), which triggered a substantial growth in the number of programs.