Investigated was the influence on learner outcomes of the repeatable testing provision of Bloom's mastery learning model for ninth graders in an Introduction to Chemistry and Physics course. Neither student achievement nor attitude toward learning science was favorably influenced by repeatable testing. (MNS)

During the past two decades, there have been several highly visible developments in education, including behavioral objectives, criterion-referenced test interpretations, the mastery model in instruction, performance-based instructional programs, competency testing, and accountability. This paper is an attempt to weave these various developments…