1, write a tip-off letter to the district education bureau and put it into the "petition email".
2. If the District Education Bureau ignores you, you can write a tip-off letter to the Municipal Education Bureau and put it in the "petition mailbox".
3. If the Municipal Education Bureau ignores you, you can write a tip-off letter to the Provincial Education Bureau and put it in the "petition mailbox".
In order to improve the success rate of your report, you can go to these departments to "petition directly" and find relevant leaders.
If the above practices are unsuccessful, there is only one last way. Find the media. If what you report is eye-catching, there will be media looking for you.
PS: The usual practice in our school is to say what you want to say on BBS, so that at least everyone knows. And school forums are generally relaxed. As long as you are not anti-party and counter-revolutionary, the teacher will sympathize with you. After all, the ivory tower is relatively clean.