The subject numbering system assigns a code to each subject offered in the university, and serves to display the level and sequence of the subjects. Its aim is to support students in deciding which classes to take by providing information about the level of the subject and in which order they should be taken. From the faculty members' point of view, it creates an opportunity to examine the systematic structure of the curriculum and reflect on the content and level of the classes they teach, helps them understand students' knowledge and abilities before and after the class, and therefore encourages improvement of teaching methods and course content if deemed necessary. Furthermore, university education is becoming increasingly global. By displaying the subject content and level in a simple format, subject numbering will contribute to the smooth operation of overseas exchange programs and joint degree systems run in cooperation with overseas universities.