The College of Medicine, Seoul National University developed a course named "Society and Physician", the purpose of which stimulated the interest of students toward social affairs and made them recognize the relation between the physician and the society. Medical ethics is a part of it consisted of four modules(Patient/Doctor/Society, Medical Ethics, Disease, Medicine and Culture, Medicine and Social Welfare). The medical ethics module was made of 3 lectures and 1 symposium about the "cloning debate". The special website for it was made to accumulate the reading materials and to stimulate "on-line discussion" among students. The students prepared and run the whole symposium session. According to the afterward survey, the students showed some satisfaction about this course, and confessed some of their thoughts toward "cloning" had changed. We think that medical ethics education using the form of student symposium assisted by "on-line discussion" can be applied to a certain circumstance, especially when the number of students is so large and the education resources are limited.