We present a logistic function of a monotonic polynomial with a lower asymptote, allowing additional flexibility beyond the three-parameter logistic model. We develop a maximum marginal likelihood based approach to estimate the item parameters. The new item response model is demonstrated on math assessment data from a state, and a computationally…

Schools are scrambling to prepare students for the writing assessments aligned to the Common Core State Standards. In some states, writing has not been assessed for over a decade. Yet, with the use of computerized grading of the student's writing, many teachers are wondering how to best prepare students for the writing assessments that will…

The Naval Academy has instituted a system of averaging the Scholastic Aptitude Test scores of each applicant rather than using the most recent score alone as an admission criterion, having found that average scores are better predictors of academic success at the institution. (MSE)

Some little-understood facts about standardized test scores and how they are reported and interpreted are explained. In particular, the practice of score equating ensures that different test forms have comparable scoring. This and other practices are designed to enhance the equity of testing. (MSE)