I have been suspended for 5 days for leaving my high school campus and going to smoke weed at my house and came back to school high , it then got reported I was suspended for 5 days and I have court tomorrow , I have never been in serious trouble before and I am 16 ,what will happen possibly?

There are 3 other girls involved one had the weed and me and the other girls smoked it and we all came back to school high

You could be suspended from the school permanently, you could be sent to an alternative school, or possibly be sent to rehab. We don't have any idea what will happen to you.