Well, it took me 4 years to get my Associate's degree due in part to my dropping almost any class that included group work or presentations. I'm still working towards my BA which has included dropping and failing classes, and things I took that haven't counted towards my major. It will have taken me 9 years to finish.
I've gone from the Dean's List to Academic Probation and back up (but not that far back up), gotten everything from A's to F's and everything in between: Incompletes, Withdrawals. I've gotten reccomendations from professors on my writing, to professors who make me revise my papers 5 times.
All I can say is, what a ride.