The main activity of Environment committee is the publication of Environmental Management Report and the enlightenment about the environment to the colleges and the students, We measured the tempereture and the humidity of the class room in Education Building to consider about the operation of the air conditioning. As a result, the southern class room was hotter than the northern class room. In the class room, the thermal difference is occurred between the side of the corridor and the window. Therefore,we proposed the optimum decisio of the preset temperature and the operation of the air conditioning.