In this paper I have attempted to examine critically the accreditation process change of religious education textbook publication and then articulate the ignored part in the present national curriculum of religious education in Korea. I analyzed the recent change of the accreditation process change from the fourth to the seventh renovated national curriculum process. In the process I have come to realize that the accreditation process was not initiated by the Korean Ministry of Education but the religious mission funded secondary school. The mission funded school wanted to establish religious education as a regular class subject in the secondary school. So the Korean Ministry of Education has accepted the mission school suggestion with one condition. The condition is on the publication of religious education textbook through the accreditation process. If it would not have an official accreditation for any religious education textbook, it could not be used as a textbook in religious education class. Due to this condition, the real responsible person is not the writer of textbook and publisher but the school principal. I think that this condition has been the problem for the development of the good quality textbook. For the reference to the foreign cases in other countries, especially Europe and North America, I have exchanged many e-mails with the key scholars of religious education and discussed on the issues. Alas! I came to realize that they do not have any accreditation process system of religious education textbook publication. They all commonly emphasized that religious education textbook should be published freely. Text writer and publisher should be the most important constituent for the good quality of religious education textbook. If so, eventually the free publication would improve the quality of religious education textbook. In this sense, Korean present accreditation system should be changed into the free publishing system. It will be helpful for the school to choose good quality textbooks. It will also be encouraging for the textbook writer and the publisher. Finally in this paper I suggested two things for the future concern of religious education textbook cultivation. The first thing is about the relationship between religious education curriculum and other subject curriculums. For example, Korean history, world history, and philosophy subjects have section on religion which are overlapped with religious education. So it should be rearranged with other curriculum committees. The second thing is about concern of student experience and thought on religion in their life. The present curriculum is focused on knowledge and teacher oriented curriculum. Due to this aspect, student dimension does not be considered enough. Further the present curriculum does not seemingly welcome the free expression of religion related experience in the class. I think that it should be more welcomed for the better future Korean and global citizen whatever students would have opinions about religions in class. Religious education class should be more experimental for student’s own critical reflection of religion.