Most Helpful Guy
He sounds physically abusive and emotionally abusive.
Get out now.
For most cases, breaking up with text is a bad idea. But this time it is a good option. Texting is the best option for scenarios where you are afraid of the person. Granted, he'll probably blow up and send you hateful threats or words (most likely through text). What do you then? Tell him you'll call the cops if he tries anything.
You've got the messages as proof now as his threat. You can probably file a restraining order with the person since you are over 12 and the guy is known to be abusive and stuff. You can get a restraining order even if you go to the same school. I may even suggest filing one if you are that scared of him.
More on that here: https://fvlc.org/get-help/faq-restraining-orders/
If you have any more questions, just ask and I can try and help the best to my knowledge.
Most Helpful Girl
Just do it. the sooner you get rid of him the better trust me I have been through this plenty of times. Text him and break up with him and delete all his stuff from your life. his number his pics his social media. ignore his calls, block him and consider yourself single and you're free,