2. If it is someone else's fault, for example, some students have a bad habit of stealing, and some students may be jealous of what your children use. First of all, you can tell the teacher, let the teacher pay attention to which classmate it is, and then educate in secret, so as not to let others know, so as not to hurt others' self-esteem. If the teacher's education is not good, contact the parents and take it back to strengthen discipline.