In traditional education, it is assumed that there are excellent and weak learners in learning. On the basis of this
hypothesis, excellent learners can learn complex and abstract thoughts while weak learners are able to learn the
simplest thoughts. In contrary, Bloom believes that an essential hypothesis in mastery learning method is that if
there is suitable opportunity for education and there is enough time,all learners can learn all educational targets and
have mastery over them(Bloom,1976).