Dream About Alien Invasion At School

Dreamed I was going to high school, but me and another student noticed strange circles and beams of light. we kept staring out the window and suddenly something huge and round and bright blue colored was dropping thing all around the area. It was an alien invasion, it had to be. We decided that we would warn our teachers or the police or someone. I didn't get around to it because I didn't know where any of my classes were and I kept getting to them late. Then everyone was eating lunch and I liked it so much I ordered seconds but I was worried about the price. I'd decided I'd pay for it myself and not ask my parents for money. After lunch I was late to my class again, and the teacher mockingly goes "Oh Julia has decided to grace us with her pesence." and he proceeds to say "Oh, the students and I were wondering" and he asks me a really personal question that I couldn't remember. I get so upset, and everyone is laughing. I immediately tell the teacher that I've had enough, and that I'm going to take this up with the principle and that I'm dropping this class. I then take all my stuff angrily and huff my way out of the room. Im walking to the principles office when a girl walks up to me. she says to follow her. We duck into a random empty room. The girl explains that she heard about what the teacher said and also doesn't like him and that we can get back at him. She said she'll give me some extra points if I help her out. I say sure.Then we talk about how we will sabatoge his class and there's a phone nearby, and he's calling through it and saying things like "I hear what you two are saying, you didn't think I could have ears everywhere did you?" but I ignore the phone and say we will figure it out. then I go to a teacher at the front desk and ask her if someone can take me home because none of the busses go my way, and I ask about the aliens. She says she can take me home. we get into her big black jeep and she starts driving me home. As we are headed to my home we see parents and children getting shot along the road. there's blood every where and I'm panicking. I'm afraid we are going to hit bodies. My teacher drives around them expertly and suddenly we are circling my home. It looks like a bunker and she says that the police may have to open the bunker out to see if there are aliens there. I tell her no, just knock on the door and my parents will answer. she says okay, and we circle back around to the front door. Finally we knock on the door and my mom answers and opens it for us. I yell mommy and run and hug her. I wake up.