The purpose of this research is to observe constantly changing reality and characteristics of elementary teachers’ way of writing class teaching plans in connection with the regional class culture. In order to do so, comparison of purpose, method and difficulty in writing teaching plans between precedents of a teacher in a school writing a standardized plan and a teacher from another school freely writing his/her own plan. The result showed that writing a teaching plan in a standardized school is an apprentice education and contained detailed contents of the plan for 40 years. Also, it restructured the content of the plan based on the textbook. On the other hand, the school that allows teachers to freely write the plan was democratic in its process and had various types of plans. The content of the plan integrated topics rather than centering on the textbook. The contents of the social studies class plan were composed mainly of interdisciplinary integration rather than of the characteristics of the school. Combining these changes, social studies class plan were no longer used as a tool to evaluate a classmate’s class, but as a tool to reflect on one’s class. However, the emphasis on personal aspects in the writing of the class proposal did not secure a venue for dialogue with others, which was not effectively used to enhance the professionalism of social studies