Academic Operation will be changed based on three different levels of social distancing due to COVID-19 conditions during the fall semester. If there are more than 100 coronavirus cases, all classes will be moved to online classes. If there are 50-100 cases in the second phase, students will take limited face-to-face classes. Mixed classes combining online and face-to-face learning will be held in the first phase with 50 or fewer cases. If face-to-face classes are possible in the second semester, the basic form of classes are mixed ones. If the COVID-19 situation becomes serious, they can be converted to fully remote classes.