The ideal of education can be delivered by the media of the form and the content of curriculum. However, the actualization of the curriculum can only be possible through the process of making and changing that is dependent on a teacher's way of understanding and his/her creative skills. The purposes of this study were to develop a teacher training program to promote teachers' aesthetic connoisseurship and to evaluate the effectiveness of the program. First, based on Maxine Greene's aesthetic theory, the three key concepts were extracted: (a) encountering with arts, (b) wide-awakeness, and (c) teacher as a stranger. From the theoretical review, the seven main topics of the program were decided. When designing the specific content and activities of the program, three things were especially focused: (a) participants' aesthetic experience, (b) their critical reviews, and (c) their reflection concerning educational practices and materialization. Fifteen early childhood teachers and directors participated in the study. Their changes of aesthetic understanding were examined by statistical tests of their aesthetic skills(using teachers' self-reports developed for this study), their reflective journals, and their interviews. Most of the participants reported their changes in the attitudes toward the world and in their habit of thinking. They said that they became more sensitive to the world around them, more interested in beauty and arts, and more seriously concerned about themselves, children, and educational practice than did they before. In addition, difference between the scores of the pre-tests and the post-tests of the teachers' self-reports was statistically significant.