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Conger, Dylan – Institute for Education and Social Policy, New York University, 2008
The No Child Left Behind Act requires schools to begin testing new English Learners (EL) in English language arts within three years after they enter school and holds schools accountable for their performance on these exams. Yet very little empirical work has examined exactly how long it takes EL students to become proficient in English and how…
Descriptors: Testing, Second Language Learning, Probability, Student Characteristics


