This review describes a meta-analysis of findings from 50 controlled evaluations of intelligent computer tutoring systems. The median effect of intelligent tutoring in the 50 evaluations was to raise test scores 0.66 standard deviations over conventional levels, or from the 50th to the 75th percentile. However, the amount of improvement found in…

Teachers and researchers can learn more about mastery learning by looking at the full picture instead of the small area on which R. E. Slavin focuses. Effects on precollege examinations constitute only a small part of the story; the larger literature presents many examples of its effectiveness. (SLD)

A meta-analysis of 51 studies of computer-based instruction shows: a rise in student test scores; student attitudes toward the subject that are slightly more favorable; student attitudes toward computers that are strikingly more positive; and savings from 39 percent to 88 percent in student learning time. (MLF)