In educational research and evaluation, a sample of subjects usually received some type of programmatic treatment. Outcome scores for these students are then compared with outcome scores of a control or comparison group. M. Lewis and H. McGurk (1972) have pointed out that there are some implicit assumptions when this approach is applied to…

Evaluations of compensatory education programs provided under Chapter 1 of the Education Consolidation and Improvement Act (ECIA) indicate that the traditional provision of a less challenging curriculum, limited achievement goals, and emphasis on pull-out programs for compensatory instruction actually hamper the ability of low-achieving students…