A modern teacher educates children to value their emotions.
The search for a personal identity is the life task of a teenager.
If you want your children to improve, let them overhear the nice things you say about them to others.
Responsibility is fostered by allowing children a voice and wherever indicated a choice in matters that affect them.
Treat a child as though he already is the person he's capable of becoming.
Adolescence can be a time of turmoil and turbulence, of stress and storm. Rebellion against authority and against convention is to be expected and tolerated for the sake of learning and growth.