1. It is a serious illegal act to get the evidence before prosecuting this behavior;

2. Write a tip-off letter and report it to the top of the school;

3. Collect information in detail, such as photos, audio recordings, videos, written documents and other important evidence, and send them directly to the Education Bureau;

4. You can call the city's education system to publicly report problems, log on to the hotline website of the Municipal Education Bureau, and enter the official WeChat account of the education bureaus of various provinces and cities to complain and report teachers' bad behavior.

Criminal Procedure Law of the People's Republic of China

Article 1 1 1

Reports, complaints and reports can be made in writing or orally. The staff who accept the oral report, complaint or report shall make a written record, which shall be signed or sealed by the informant, complainant and informant after being correctly read out. The staff who accept the complaint and report shall explain the legal responsibility of false accusation and frame-up to the complainant and informant. However, as long as it is not fabricating facts and evidence, even if the facts of the accusation and report are different, or even false accusation, it should be strictly distinguished from false accusation. Public security organs, people's procuratorates or people's courts shall ensure the safety of informants, complainants, informants and their close relatives. Informants, complainants and informants who are unwilling to disclose their names and report, accuse and report their acts shall keep them confidential.