The pre-service teachers find the chance to practice their classroom management skills during their practicum as they present demo lessons under supervision of their university instructors and mentor teachers. It had been discovered in a previous study, however, that the interactional features during the classroom management episodes in pre-service teachers' demo lessons were different from those in the lessons of the in-service teachers. The aim of this study was to unveil how pre-service teachers manage their classes differently from in-service teachers by carrying out a fine-grained comparison. The point-by-point comparison revealed both qualitative and quantitative differences which might not be immediately obvious to an observer at first sight. The differences were discussed in terms of the specific procedures of the teaching practice course and some suggestions were presented.