We analyzed a pool of items from an admissions test for differential item functioning (DIF) for groups based on age, socioeconomic status, citizenship, or English language status using Mantel-Haenszel and item response theory. DIF items were systematically examined to identify its possible sources by item type, content, and wording. DIF was…

There is a large gap in higher education attainment between different groups of society, especially along gender, class and ethnic dimensions. Reducing these gaps in attainment has been at the forefront of policy makers, not only in this country but also in most advanced economy with policies ranging from financial support to positive…

National assessments of U.S. high school students' writing and other verbal abilities do not show that literacy has declined substantially in recent years. In fact, scores have been relatively stable since the 1980s. The proportion of students with solid writing and reading abilities has held fairly steady but remained small during the past 25…