I've dreamed of killing my teacher?

[Avengerism]

Okay, so in my dream It was an average day in school at the subject of ... (I'll keep the subject secret, but I like this subject I just hate the teacher in real life) In my dream he was discussing something when suddenly he just teased me (He always do this to everyone he tells us bad words and well call us some names that are well, you know) I was however unaffected by his teasing, and later he just switches the topic on teasing my family, and that got me angry so I punched him in my dreams, kicked him, and thrown him in a paper shredder a huge one actually (We don't have this device in our classroom in real life). After doing that I was feeling guilty in my dreams so I told our Prefect of Discipline Head (She's really nice in real life) what happened, she said that the Government will take me away from my parents after that I woke up. What does it mean? I mean really, I still feel bad about it, though.