Through the nineteen-forties, fifties, and up to the mid-sixties, achievement test scores steadily increased. Since then, many test scores drop. The reported test score declines are more dramatic in recent years and most evident for higher grades. They are specially pronounced in verbal tests, but hold for nearly all tested areas. Specially:…

The purpose of this study was to compare the relative robustness of the one-, two-, and modified two-parameter latent trait logistic models for the Iowa Tests of Educational Development. Results suggest that the modified two-parameter model may provide the best representation of the data. (Author/BW)

Average performance on subtests of the Iowa Tests of Educational Development was compared for 177 high school students taking the test under silent reading (standardized) conditions and time limits and students listening to audiotapes of test material as they read the test. Poor readers were helped by the tapes. (SLD)

As part of its academic testing program and the evaluation of academic achievement, the Des Moines (Iowa) Public School System administers two standardized, norm-referenced achievement tests. These are the Iowa Tests of Basic Skills (ITBS) and the Iowa Tests of Educational Development (ITED). This document provides information regarding…

The stability of reading performance, as measured by the Metropolitan Achievement Tests, Iowa Tests of Basic Skills, and Iowa Tests of Educational Development, was studied using students in grades 1 through 7 and grades 9 and 11. A reading vocabulary test and a reading comprehension test are included in all three test batteries. The standard…