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Kieffer, Michael J.; Rivera, Mabel; Francis, David J. – Center on Instruction, 2012
This report presents results from a new quantitative synthesis of research on the effectiveness and validity of test accommodations for English language learners (ELLs) taking large-scale assessments. In 2006, the Center on Instruction published a review of the literature on test accommodations for ELLs titled "Practical Guidelines for the…
Descriptors: Testing Accommodations, English Language Learners, Evidence, Meta Analysis
Dungan, Lucille A. – 1988
This study investigated the "customization" of a standardized achievement test to measure the effect on group and individual scores. "Customization" refers to the modification of an existing test to more closely match test specifications of the entity using the test, usually a state or large school district. Results of an…
Descriptors: Achievement Tests, Difficulty Level, Elementary School Students, Grade 4