Well I will say, though I was a traditional student I also struggled in my core science classes (mainly the pre-requisite classes). I got a few B's and even C's in many of my pre-req classes but I still ended up with an overall gpa of a 3.62. Also in OptomCAS you are required to enter in grades from all of your previous colleges so your overall combined gpa will show up to be much higher than your gpa's in those individual colleges.