To contribute to a more differentiated description of the cognitive status of young disadvantaged children, a comparative study was made of achievement test performance of disadvantaged and middle class groups of children. On the basis of published reading test scores, test data were gathered from nine public schools, four of which were selected…

The Follow Through experience is beginning to provide compelling evidence bearing upon important policy issues in compensatory education. This evidence, coming as it does from a naturalistic quasi-experiment, cannot draw its plausibility from the conventional statistical inference appropriate to probabilistically-constructed true experiments. The…

Academic achievement under a four-day school week is compared to the traditional five-day school week. Test scores from the CAT [California Achievement Test], ITBS [Iowa Test of Basic Skills], TASK [Stanford Test of Academic Skills], SAT [Stanford Achievement Test], TAP [Tests of Academic Proficiency], and MAT [Metropolitan Achievement Test] were…