"Reading to learn" has been one of the four key learning strategies in the curriculum reforms implemented by the government (CDC, 2002). Local schools have strengthened reading across curriculum and the teaching of reading strategies. However, apart from integrating reading as a component of curriculum, most of the schools ignore the other functions of reading. Inspired by the theory of Bibliotherapy, a reading program is launched as a strategy to communicate with misbehaving students in a local secondary school. The objective of this study is to find out if Bibliotherapy has a positive effect on a misbehaving student, when implemented by a content subject teacher. Understanding the role of reading inside and outside the classroom, and mastering the strategies of teaching reading should be a professional competency of all local teachers. The function of reading outside the regular classroom will be explored in this paper. How a teacher brought his teaching professionalism into full play by applying reading instruction for correcting a student' s misbehavior will be investigated as well. The results in the study clearly show that reading can improve a student' s behavior because it can help the student to shift from cognitive knowledge to consciousness of awareness and reflective attitude by making analogy between the reading topic and his misbehavior. The observation in this study can provide significant reference for the future development of reading curriculum and teacher professionalism.[Copyright of Hong Kong Teachers' Centre Journal is the property of Hong Kong Teachers' Centre at http://www.edb.org.hk/hktc]