The author has only to submit a manuscript that is free from plagiarism and academic malpractices. The editor, however, double-checks each article before its publication. The first step is to check plagiarism against the offline databases developed by the Faculty of Tarbiyah and Education, UIN Sunan Kalijaga Yogyakarta. Secondly, against as much as possible online databases. A maximum of 15 % of similarities is allowed for the submitted papers. Should we find more than 15 % of the similarity index, the article will be returned to the author for correction and re-submission.