It is illegal for a teacher to dissuade or make it illegal to transfer. According to relevant laws, students who violate the school management system shall be criticized and educated by the school and shall not be expelled. In any of the following circumstances, the education administrative department of the people's government at the county level shall order it to make corrections within a time limit; If the circumstances are serious, the directly responsible person in charge and other directly responsible personnel shall be punished according to law:

1, refusing to accept disabled school-age children and adolescents who have the ability to receive general education;

2, divided into key classes and non-key classes;

3. Illegally expelling students;

4. Use unapproved textbooks.

compulsory education law of the people's republic of china

Article 29

Teachers should treat students equally in education and teaching, pay attention to their individual differences, teach students in accordance with their aptitude and promote their all-round development.

Teachers should respect students' personality, and must not discriminate against students, and must not punish students with corporal punishment, corporal punishment in disguised form or other acts that insult their personal dignity, or infringe upon their legitimate rights and interests.