Discusses R. Slavin's best-evidence synthesis method as an alternative to traditional meta-analysis and review techniques. Explains the inherent weaknesses of the technique Slavin uses and how the techniques can be misused. (RB)

It is argued that mastery learning is one explanation for the documented differences in mathematics achievement between Japanese and American students. Given its emphasis on mastery at one stage before moving on to the next stage, and the potential accumulated benefits of this approach over time, mastery learning appears to be very similar to what…