Yokohama City University (横浜市立大学, Yokohama shiritsu daigaku) is a public university in Japan. The main campus is located in Kanazawa-ku, Yokohama. An origin of YCU was founded in 1882 as Yokohama School of Commerce (橫濱商法學校, Yokohama shōhō gakkō). At first this school was maintained by the society of local merchants. In 1888 the school was renamed Yokohama Commercial School (橫濱商業學校, abbreviated to Y-School), a five-year school for boys (ages 14–19 or above). In 1917 Y-School was municipalized and in 1921 it became the only seven-year commercial school in Japan (for ages 12–19 or above). The Ministry of Education (MEXT today) urged the school to shorten the curriculum by two years, for Japanese Commercial School Regulations (1921) did not specify a seven-year course for commercial schools. In 1924 Y-school became a five-year school attaching a two-year specialized course (a seven-year course de facto). In 1928 the specialized course of Y-School became Yokohama City College of Commerce (橫濱市立橫濱商業專門學校, abbreviated to Y-College).