The new coronavirus infection COVID-19, which was declared a pandemic in March 2020, has changed not only our lives and working styles, but also the landscape of the world, and it is still in full swing. The new coronavirus has a great impact on the education, research, and management of universities on which many researchers rely. In particular, as a response to education, online classes at universities have spread all at once to reduce the risk of infection, and it can be said that one of the concerns for university reform has progressed at once. Online lessons are, in a sense, an opportunity to innovate in university education and are an effective way for knowledge-giving lessons. However, opportunities for dialogue between teachers and students, or between students, are lost, and there remains a problem in clarifying the class gap between teachers.