I'm a sophomore now, and my mobile phone has been confiscated. Is it illegal for the teacher to read all the information phone books? Can I complain to the Education Bureau?

I don't think teachers should look at students' information at will. If you read it out of love for students and understanding their ideological situation, you should talk to you. At your age, you really should focus on your studies. What is not prohibited by law is not illegal, but I think the teacher's approach is too blunt, and I don't agree. Of course, you can complain to the Education Bureau, which means that teachers should pay attention to their working methods and improve their management level. If you ask the comrades in the Education Bureau not to tell your name, they generally won't. I also hope that you really love each other, study hard and make progress together. Don't hold a grudge against teachers, their starting point is not bad, but their methods are wrong.