I'm not going to return to my job next school year
Why wouldn't you want to go back to your job?
I can't stand my co-workers anymore. I even want to stab someone at work.
It sounds like that job was making you really miserable! I think it's good for you to avoid going back there. I'd say quitting would be the right move, for sure.
Unless I have another job lined up and I'm quite sure I will be making another one. Who says I have to keep working with my co-workers.
You're right, you don't need to continue your job as it seems to have terrible work ethics and toxic environment. I'm sure you will be able to find a better job.