Teaching incompetence
Such teachers often have a little knowledge of the subjects they teach and can't provide students with valuable knowledge and skills.
♀? Unfulfilled duty
They are perfunctory in their work, often absent, don't assign homework, don't answer questions, and it is no performance at all's duty.
Disrespect for students
Defamation and ridicule have become their normal state, turning a blind eye to students' needs and feelings.
Isolate oneself
They refuse to cooperate with others, are indifferent to colleagues and parents of students, and even have conflicts, which leads to the deterioration of the educational environment.
Prejudice and discrimination
Students should not be treated equally or unfairly according to personal preferences or other factors.