It’s just that if I re-apply, they’ll treat me as a new student all over again (and as such they only allow admission into the first year). Their own courses don’t get any special treatment, aside from not requiring me to also send them syllabi for those.

This means failing in the 3rd year would be a disaster as I’d have to do the entire 3 years all over again. Or go to a different college. There’s basically one for people who failed the college I went to (many such cases).

Anyway, to sum it up:

• For students during the current study, anything above F is accepted, whether you were previously kicked out or not.
• From any previous studies, only A and B are accepted.