摘要：Practical Teaching Program (PTP) is a program which must be taken by all university students in the education program. The purpose of PTP is, for the students (practitioners), to gain educational experience factually in the field, both with the school administration and its teaching-learning process. But in reality, there are numerous of students, who have finished their teaching exam in school who said that there are still confuse if they are going to be a professional teacher in the future. This research tries to explore the implementation of PTP based on Lesson Study (LS) principal and procedure. The method use is qualitative descriptive. This study conducted by Class Action Research: planning, action, observation, and reflection. The subjects of this research are 5 Arabic language students who are undergone PTP in the MAN (Madrasah Aliyah Negeri or State Senior High School for Islamic Education) 1 in Bandung, West Java, Indonesia. The instrument used to measures the professionalism of future Arabic language teacher are test, interview, observation, and direct supervision during the lesson study activity. The result shows that the PTP model of guidance and evaluation process with LS based can increase the professionalism of future Arabic language teacher which related to the pedagogic, professional, social, and personality of the teacher competencies.
关键词：Practical teaching; lesson study; main supervisor; vice supervisor; Arabic language teacher; and professional competencies
