Actually, this kind of thing varies from person to person. If the students who make mistakes have strong self-esteem, it will not only hurt their friendship, but also hurt the hearts of the people who make mistakes. It is difficult to point out whether it is good or bad. But some people are very modest. When you point out his mistakes in person, he will generally accept them with humility.

Of course, I personally suggest not. In my opinion, it is good to point out shortcomings, but it is very irrational to point them out in person. Everyone has his own self-esteem. When you tell his mistakes to his face, his self-esteem will be hurt to a certain extent, no matter how hurt, but it will definitely change this person slowly. And the development trend is not what we can predict.

I hope my personal opinion can help you, thank you.