Useful is a little useful, I'm afraid it doesn't matter. If you want speed, report it directly to the provincial level. If you report it locally, I'm afraid it has a deep relationship and enough time. Generally speaking, complaining about teachers' violations to the Education Bureau will have a great impact on teachers under certain circumstances. Not only will it affect the promotion of teachers, such as the evaluation of professional titles, but it may also be severely punished, publicly apologized, fined or even dismissed. Both parents and teachers will be good to their children. If there is a problem, parents may wish to communicate with the teacher first. Of course, if you meet a teacher with a bad ethics, parents can also complain and safeguard their children's rights and interests.