Responses to American College Test College Outcome Measures Program (ACT-COMP) items by 481 black and 9,237 white students at the University of Tennessee (Knoxville) were analyzed using F. Samejima's graded model to determine the level of differential item functioning (DIF). Students had been tested using Form 8 of the ACT-COMP objective test…

Both on-level and out-of-level tests were administered to third and fifth grade children in order to compare the scaled scores of different level tests of the same testing program and to discover whether the relationship between levels might be distorted by ceiling or floor effects. Only reading tests were used in this study. The Stanford…

Fourth, seventh, and ninth grade students in Elementary Secondary Education Act (ESEA) Title I programs were tested with the reading comprehension subtests of the Comprehensive Tests of Basic Skills, at each of two levels: on-level for each respective grade, and an easier out-of-level form. Approximately half of these students were found to be…