I went to a T4 last year, where 30 out of 200 students were academically dismissed. The curve made it that way. I knew people who genuinely tried to do well and failed. I've since transferred to a T1 and it is IMPOSSIBLE to fail. They do not give Fs. I think the T4/T1 distinction in untrue in many areas you will read about on this board, but unfortunately I believe it is true in this respect.
I go to a T1 and know of at least one 3L who failed one class two times, so it's not impossible to fail everywhere. I know of other people who got D's as well.