The same issue I had, my RPN GPA is around 79%. UOIT last year's cutoff was mid-80s, so I have to take either a college certificate or a university course to upgrade. Each college-approved certificate is worth 4 credits, and the college course is worth 1 credit, but the university course doubles the credit of college courses.
I already applied to Trent Compressed Nursing and UOIT, but it is unlikely to be accepted. I sent emails to UOIT but never replied to you specifically. I was wondering which upgrade courses that I should take now in order not to waste my time.