The Bill of Rights is relevant to you because it is the reason you don't have to live with an overpowering government. (Because that was it's original purpose, to restrict the power of the national government). It is relevant to you, as a high schooler, because it is full of freedoms that protect you from the power of the government. It is the document that tells you that you have a right to freedom of speech, and if you disagree with someone, your teacher in this case, you are allowed to vocalize it. And so on...
Hope that helps!
