Tell them you understand their disappointment, but you are pleased with your choice and will speak with them soon. Inform them that after you've moved in, you'll invite them over for supper. Tell them you'll speak with them when they've calmed down. Don't argue with them, and don't talk to them if they aren't calm and courteous. It's best to avoid any controversy at all since this will only make things worse. Parents often worry about what will happen to their children while they're away. If you live with grandparents, then they will be able to provide some security for you while your parent is gone. This will help your parent feel better about allowing you to leave home early. The earlier you start planning your move, the easier it will be. Set up a meeting with your grandmother or grandfather before you go to school every day so they will know you're aware of the situation and not to panic if you don't come home right away. Write a letter to your parent(s) explaining how much you love them and how you're doing everything you can to stay out of trouble, telling them not to worry if you don't return home immediately because you're living with your grandparents and there's no way they could fail to see how responsible they were for making this decision. Try not to worry about what might have happened if you hadn't moved in with your grandparents. Sometimes these kinds of things never get resolved between families.