P. H Hirst emphasized conceptual linkage between ``the acquisition of knowledge``, ``the development of mind``. According to Hirst, the aims of education is to develop one`s mind through an initiation of the ``forms of knowledge``. And he argues that value of education has transcendant justification by intrinsic value of knowledge. This study criticizes the theory of ``forms of knowledge`` focused on educative intrinsic value and educative substance. First, Hirst confused ``the value of education`` with ``the value of knowledge``. Attempting to do justice to the intrinsic values of the subject matter in the school curriculum, has encountered ignoratio elenchi. In this case, the value of education is reduced into that of subject matters. Second, Hirst confused ``educational content`` with ``subjective content``, unlike educational content or curriculum, renders empowerment to the educational trnastalent. The value of subject matters must reconceptualize as a means to provide the educational substance to realize the educational interest and enthusiasm. We should be expand boundary of the educative substance to whole transcendental worlds as well as subject matters. Thirdly, Hirst`s theory of education showed functional viewpoint. Although education is processing to retain intrinsic value itself, Hirst understanded as a means for development rationality. This type of means-ends approach to education has reduced and distorted the nature of education. Educational studies should be autonomically investigate what is educational structure, concept, intrinsic value, educative substance. etc..