This article tries to show that the existence of school subjects’ courses in our society brings many effects. The widespread of school subjects’ courses recently has influenced the public interest to TPQ. In addition, the high interest of the students to school subjects’ courses also shows students and parents distrust towards formal education that is school. The focus of this study is to find out the people’s reasons which prefer to engage their children to school subjects’ courses than to the TPQ. The method of this research is qualitative method which uses library research by analyzing some literatures such as books and journal articles. The results of this study shows that the presence of many school subjects’ courses makes the public interest in the TPQ decreased. There are many factors which influence the decline of public interest in TPQ. These factors include the more difficult of the subjects in school, the same of learning time of TPQ and school subjects’ courses, the quality and quantity of teacher and institutional facilities.