increase your family activities together...fun stuff, so that he feels it's a positive environment to spend time with family. it's normal developmental progression for kids to start breaking away from their parents at this age. however, that doesn't mean they need to move in a direction that can get them in trouble. you need to state the family rules, and what the consequences are for breaking them. say what you mean and mean what you say. catch him in the act of good behavior and acknowlege it: great job getting home before curfew, i appreciate the effort you're making to follow the rules, etc.kids have a need to know what their boundaries are. this doesn't mean they won't test them. i never got into grounding, as it meant i had to be grounded also. taking away or restricting privileges can be more impactful. make sure that the loss of privilege is stated in the consequences. as your son understands how much fun it is to be with family, and that rules and boundaries come from a place of love and guidance, he will make better decisions and choices for himself. best of luck to you.