This document discusses identification and assessment of English language learners (ELLs) and their needs. It outlines that under No Child Left Behind, schools must demonstrate that ELLs meet academic standards and provide annual English proficiency assessments. The Individuals with Disabilities Education Act regulates education of students with disabilities. Accurately identifying ELLs' language proficiency and academic achievement is challenging due to interactions between language and disability. Early identification of at-risk ELLs is important to provide appropriate interventions.