A method is presented for estimating the accuracy and consistency of classifications based on test scores. The reliability of the score is used to estimate effective test length in terms of discrete items. The true-score distribution is estimated by fitting a four-parameter beta model. (SLD)

This paper presents a method for estimating the accuracy and consistency of classifications based on test scores. The scores can be produced by any scoring method, including the formation of a weighted composite. The estimates use data from a single form. The reliability of the score is used to estimate its effective test length in terms of…

H. Wainer and L. Steinberg (1992) showed that within broad categories of first-year college mathematics courses (e.g., calculus), men had substantially higher average scores on the mathematics section of the Scholastic Aptitude Test (SAT-M) than women who earned the same letter grade. However, Wainer and Steinberg's analysis may lead to…

A reanalysis of the data considered by H. Wainer and L. Steinberg (1992) shows that a more appropriate composite indicator made up of Scholastic Aptitude Test mathematics score and high school grade point average demonstrates minuscule gender differences for both calculus and precalculus courses. (SLD)

Essay and multiple-choice scores from Advanced Placement (AP) examinations in American History, European History, English Language and Composition, and Biology were matched with freshman grades in a sample of 32 colleges. Multiple-choice scores from the American History and Biology examinations were superior to essays for predicting overall grade…