Mikyung Kim Wolf, Jenny C. Kao, Nichole M. Rivera and Sandy M. Chang have written an article about "Accommodation Practices for English Language Learners in States’ Mathematics Assessments". This article was recently published in Teachers College Record. Here are their conclusions:
Despite the limitation of the small sample in this study, the findings of the study offer practical implications for policymakers and educators in the use of accommodations for ELL students. The study found considerable variation reported by teachers with regard to the perception of accommodation decision makers, selection criteria, and the types of accommodations allowed in each state’s math assessment. This variation raised serious concerns regarding the adequacy of the accommodation uses and the comparability of accommodated test results across schools. In this paper, we discussed a number of possible reasons for teachers’ reported difficulty in keeping up with state policies: (a) lack of clear guidelines in making accommodation decisions and implementing accommodations in a standardized way, (b) lack of or limited opportunities in receiving information and communicating about accommodations among decision makers and teachers, and (c) limited resources and logistical difficulties. To support an appropriate use of accommodations for teachers, we recommend that states make efforts to provide comprehensive, operationalized guidelines for ELL accommodations, monitor the use of the guidelines, and hold regular professional meetings for ELL and content teachers.