How to understand that "being a teacher" is the same as "being a nanny"?

I think it's true. Nowadays, many students are resident students. Teachers should not only take care of the above things, but also take care of life and emotions, supervise students to play mobile phones, fall in love, clean up and talk with students. They always pay attention to their own dynamics, for fear that something will happen. They are really like full-fledged nannies. I think many parents don't care about their children as much as teachers do.