To examine the effectiveness of Lehigh County Community College's developmental English program, an experiment was undertaken which investigaged the differences in English composition, mechanics, and effectiveness achievement between two groups of randomly selected students scheduled to take a developmental English course. Of the 20 in each group, five were terminal and five were transfer students whose scores on the American College Test (ACT) were above the English median of 13.5, while five were terminal and five were transfer students below the ACT median. The experimental group took the developmental English course before the fall 1968 semester; the control group did not. All 40 students then received English composition instruction during the fall semester. The English Cooperative Expression Test was administered to both groups during their respective orientation periods, and then again at the end of the fall session. The experimental group achieved higher gain scores than the control group, but the differences were not statistically significant. (Author/MF)