hey Annita,
I presume you're talking about the CBR groundschool course.
There is no problem in failing any of the school exams, whether it be a test 1 or 2 or a school final, I believe the integrated lot have to get 65% minimum or they are pulled out of the exam, but as a modular (no matter what the instructors may tell you) there is no such requirement.
Loads of my course got below 65% in multiple school finals and were allowed to take the exams, in fact i think one guy got 27% in instruments in his school final!!
Oaa accomodation is expensive and crap, get a shared house.