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Improving the Validity of English Language Learner Assessment Systems. Full Report. Policy Brief 10, Spring 2010
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Wolf, Mikyung Kim; Herman, Joan L.; Dietel, Ronald – National Center for Research on Evaluation, Standards, and Student Testing (CRESST), 2010
English Language Learners (ELLs) are the fastest growing group of students in American public schools. According to Payan and Nettles (2008), the ELL population doubled in 23 states between 1995 and 2005. The U.S. Census Bureau estimates that by 2050, the Hispanic school-age population will exceed the non-Hispanic white school-age public school…
Descriptors: English (Second Language), Second Language Learning, Validity, Testing Accommodations