Watch What Is A Good Teacher for Free: How to Stream the Movie Online at 123Movies. . Mr. Kong is not a typical Hong Kong teacher. He isn't happy just teaching his students in his class, but he would rather go to rave parties and play along with them, as well as follow his female students and sit with them in their revision classes. However, by the time Mr. Kong wins the hearts of his students, the school revealed that he is not qualified to be a teacher.