Is it illegal for private colleges and universities to recruit a large number of teachers to evaluate their titles?

It is not illegal for private colleges and universities to recruit a large number of teachers for evaluation. It is not illegal for private colleges and universities to recruit a large number of teachers for evaluation. Private schools only need to recruit teachers through normal recruitment channels. However, private schools have hired excellent teachers from public schools with high salaries, resulting in the brain drain of public schools. There is no doubt that this is obviously a huge blow to public schools and affects the improvement of teaching quality in public schools. This kind of behavior is not allowed.