This thesis is an attempt to study whether if problem-oriented teaching implies a more advanced use of school libraries than other teaching methods. Teachers have been interviewed about what kind of information they and their pupils need, and where they find their information. Another question is whether the problem-oriented teaching method makes it easier for the pupils to find information in school libraries than other teaching methods do. The result of the study is that a problem-oriented teaching method creates opportunities for the school library to become an important place for information retrieval. This teaching method is a major, but not the only determinal factor. Other contributing factors could be teamwork between teachers and school librarians and the existence of learning aids.