Establish and Set Rules

 "If you don't manage your child's behavior when he is young, he will have a hard time learning how to manage himself when he is older and you aren't around. Any time of the day or night, you should always be able to answer these three questions: Where is my child? Who is with my child? What is my child doing? The rules your child has learned from you are going to shape the rules he applies to himself.

"But you can't micromanage your child," Steinberg notes. "Once they're in middle school, you need to let the child do their own homework, make their own choices, and not intervene."   

PBS Parents