The development of alternate assessments for students with disabilities plays a pivotal role in state and national accountability systems. An important assumption in the use of alternate assessments in these accountability systems is that scores are comparable on different test forms across diverse groups of students over time. The use of test…

The degree of gender differences in mathematics and science appears to vary with the content subdomain. Differences also appear to be greater on items assessing content knowledge than with items measuring reasoning about scientific processes. Many studies of gender differences have involved fairly select populations. This study focuses instead on…