Answer:
"No, you are not going, you are not allowed to go, and that is final! If you continue fighting what I say you will be grounded." An authoritarian parent might say. "If you want to go, I think you should go with your brother who is an adult for safety, and if the party gets out of control, he will get you home and out of harm's way. I want you to have fun but I also want you to be safe." Then a democratic parent might say. I understand the need for socialization with your classmates, as I did while I was in school, but it must be accomplished responsibly. By 11 p.m., I expect you two to be home."