As one of problems on today\u27s school education, we can point out the condition of alienation on learing, concretely that of a discrepancy between understanding with learning in school and understsnding with everyday experiences. It can be thougth that "knowledge" isn\u27t recongnized as a realistic one for children on the ground of its decontextualization. In this paper, I make a general view of "Cognitive apprenticeship" that assumes domain specificity of knowledge and make clear its theoretical background. Then I examine its contemporary significance from the viewpoint of epistemology. This argument will re-examine a sense of knowledge and a sense of learning which dominate today\u27s school education and present fruitful suggestions o...