At UofA, PBL is used, it's called CBL though (context based learning). I guess overall it's a pretty good program as UofA nursing students score the highest on the CRNE board exams.
"Natural breaks" are used in determining your clinical grades.
Taken from the faculty of nursing document
"In a team meeting, the course instructors identify the natural breaks. A natural break is a cut off point in a list of marks.
For example, let‟s assume that there were many students who received a score of 78 and that the next best score was 74
followed by many 73s. Seventy-four would be a natural break. The natural break system helps establish those students
who will receive A+, A, A-, etc… Finding natural breaks is not the same as bell-curving the marks. Bell curves are not
used in the Faculty of Nursing. "
In terms of getting a solid GPA, it may be an adjustment at first to do well, but honestly if you work hard on your assignments and you work well in groups, getting a solid GPA is definitely do-able.