Effective curriculum is based on a mastery learning model. According to Carroll's mastery learning model, learning rate is partially a function of student "perseverance" or time on task, which is in turn determined by a learner's entering repertoire and the quality of instruction. Although the mastery-learning model looks simple, its execution is…

This meta-analysis of 49 comparative studies shows that mastery testing has positive effects on student learning, but the size of effect depends on the stringency of the criterion used and the degree of experimental control. The effects of instructional time, student attitudes, and differences in ability levels are also addressed. (Author/LRW)