I'm not going to let my friend know our class was coming up
Could you tell me why you want to exclude your friend?
She is ugly, she is depressed all the time, she is unsmart and she is fat.
That's hardly justification to leave her out of the loop. This will really hurt your friend and even affect her grade. You should be trying to help her if you know she's having a hard time, not sabotage her.
I don't give a shit. I won't let her ruin my college experience and it's not like I can't do it on my own.
You're going to have many friends if you treat them this poorly. You really need to reconsider your attitude towards her before everyone assumes that you're a real jerk.