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Differential Item Functioning Among English Language Learners On A Large-Scale Mathematics Assessment, Ruixue Liu

Theses and Dissertations--Education Sciences

English language learner (ELL) is a term to describe students who are still acquiring English proficiency. In recent decades, ELLs are a very rapidly growing student group in United States. In school classrooms, ELLs are learning English and their academic subjects simultaneously. It is challenging for them to hear lectures, read textbooks, and complete tests in English despite of their inadequate English language proficiency (Ilich, 2013). As a result, the increasing number of ELLs in public schools has paralleled the increase in ELLs’ low mathematics performance (NCES, 2016).

Due to the popularization of international large-scale assessments in the recent decade, …