This article aims for realizing Christian schools obstacles that politically and pedagogically are preventing religious education from developing in Korea, and then suggesting three models of Christian schools which could be the clues of potential religious education. And this article also tries to infer the fruitful conclusion for educational fields with viewing the debating points that could be meaningful in the present situation, through the analyses of the model schools characteristics. The model schools are chosen among Religious alternative schools that are practicing free religious education in Germany. The reasons why I chose these schools are as follows : First, German society perceives religion as a part of public education unlike the United States. Second, religious alternative schools have shown meaningful developments in this area. The three models of religious schools are Landerziehungsheim of Hermann Lietz, a Protestant school, Carl-Joseph-Leiprecht-Hauptschule, a Catholic school, and Waldorfschule, an anthroposophical religious school. In the conclusion part, I propose some issues which will be applied meaningfully to Korean context through the analyses of three cases. Moreover I also search for the characteristics of Poolmoo agricultural high school s religious education which could be an unusually successful case in Korea. Finally, based on the argument as I mentioned above, I propose Sandol School, Korean Methodist Religious Alternative School as a model for free religious education in our country because I myself formulated the basic principles of its philosophy and curriculum. Although this article is mainly focused on the Christian schools, it can be used as a rich evidence for national-public schools religious education.