What happens if I dont go to class in college for amount of three weeks would they kick me out?

it depends on the the teacher

- if you're teachers take role everyday , yes you will be kicked out

- if you're teachers don't take role, you most likely would not get kicked out. you would just be very behind !

----in college last year i didn't show up to my psychology class for 2 weeks, and i did not get kicked out :p