Every parent and every teacher had the same set of moral values. So if I misbehaved at Johnny's house, I knew that Johnny's mother had the same set of rules as my mother. If I misbehaved at school, I knew my teachers had the same set of rules as my parents. Today that moral consensus is gone. If anything, we have a conspiracy of the kids against the adults.
Most kids spend lots of time telling their parents what other parents let their kids do.
We have sunk to the least common denominator in our morality. To rebuild civility in our society, we need to begin with the next generation. Sadly they are not learning to respect authority. They are learning to disrespect authority and to play one set of parental values against another. And parents must begin to trust a teacher's authority.