By amending the Japanese School Library Law in 1997, teacher librarians were legally designated for school libraries in Japan. The most important problem of implementing the amended law is how to assigning tasks between teacher librarians and school librarians. It is because that the teacher librarian has not been full time librarian, and school librarian has actually contributed for activation of school library as a professional while there were no teacher librarian. This paper investigates issues and problems related to the amendment of the law, conflicts caused by juxstaposition of teacher librarian and the possibilities of new school librarianship in Japan.