The purpose of this study is to explain the historicity of moral education in school and particularly to cast light upon implications that the subject of self-cultivation in the modern enlightenment period gives to contemporary moral education. By representing characters of traditional education concerning goals and contents that the subject of self-cultivation in the modern formal school has, I raise a question about the moral education in the formal school was created for political purposes, therefore, insist that it can be assume that the subject of self-cultivation in regular schooling was made for taking the place of the traditional education. Against it, you may think so that the subject of self-cultivation was the works of imitating the Japanese school system. At that time there was an inquiry into the educational systems of Japan and the United States for setting formal schooling, obviously, it was under the influence of Japan. But with a plethora of circumstantial and historical evidence, it presents that the subject of self-cultivation was a try to mediate traditional education and modern moral education, not as a mere imitation. Thus, it should reconsider the history of moral education in school, especially our own creativity of the subject of the self-cultivation in Korea. Claiming that the subject of the self-cultivation has the internal characteristics unrelated to copying the self-cultivation education of Japan, this study suggests that concrete and historical facts that prove the moral education in continuity and takes a look at contents of the subject in some detail to give a flavor of the theoretically based identity of moral education in school. The idea that the spirit of Confucianism must maintain but selectively it could be taken goods of western civilization was prevailing at that time. Although pragmatism is emphasized, the traditional moral codes and values are still significant educational contents. We can confirm coexistence of modern and traditional education in many places. The criteria for the admission of the school of education was to select a person skilled in Chinese, and teaching methods were also old-fashioned. Even though new knowledge and skills are introduced to school education, they had to be based on traditional education. Traditional education was accepted not only in general public education but also in foreign language schools for a particular purpose. Even new schools established to introduce foreign cultures were centered on Confucian education. In a transitional stage, it was considered that traditional methods were still valid. It was possible that because it was relatively autonomous to make a modern school system despite the influences of foreign. In 1909, according to the standards for textbooks, Japan confiscated several textbooks of the subject of self-cultivation and banned the sale of ones. That is what demonstrate real goals and functions of the self-cultivation subject. The subject of self-cultivation had a variety of functions and characteristics. First is to raise and practice virtues as the aims of official educational. Second is colonial ideology injection of Japan as cultivating humanity to meet the purpose of Japanese rule. The third is to recover of having lost country through education and then to promote the prosperity of the nation. We should not devalue the subject of self-cultivation due to partial functions intended by Japan. In the same vein, to teach the subject of the self-cultivation, there were traditional ways of using Sohak and Dongmongseonseup, types of ethnic education by educated persons of private schools, western courses replaced by the Bible and the ethics and so on. The goals of education of the Joseon Dynasty and its contents were about the self-cultivations and moral trainings. Traditional education at that time was, from the viewpoint of goals and contents of education, moral education in a broad sense, even though not a form of school moral education. After that, a modern curriculum of regular schooling was created and the subject of self-cultivation was born as an independent study. The subject of self-cultivation in modern times is the predecessor of Korean school moral education. The foundation of the curriculum was to preserve the value of traditional education, but its purpose had been altered in the course of its implementation. However, it is very important that moral education in school was created the first as an essential course in the modern education curriculum and it has become the basis of moral education in Korea.