But eventually
It does not mean that parents have to become judges of the children.
Parents have to talk to teachers and parents of other teenagers to find out customs and rules of that district where they live.
They, certainly, have to discuss these rules with the child.
But eventually they have to decide for themselves that they consider correct, and to insist on the though it is quite difficult.
If the decision of parents reasonably, the teenager accepts it and is at heart grateful.
On the one hand, parents have the right to tell: We know, but, with another better, they have to feel and show a great trust in the child, in his judgments and his moral.
.