Can you still do Dual enrollment if you have a low final grade?

The beginning of school I was getting good grades but after awhile it would go down and this week is the final and my friend told me if you have an "F" on the exams and final grade you won't be able to do dual enrollment and I already signed up for it and I don't want that to happen because I did work my but off and it's the teachers who suck at teaching in my school so I don't know what to do.