This falls into the category of knowing that there are many things in life that we just can't change and it's almost better not to understand the system because of the possible stress. I do understand that for those considering what school they should attend it's good to realize the nuances of any system. Having said that I think the day to day choices a student makes is going to have a far greater influence on GPA and thus the OML: sleeping or not, drinking or not, volunteering or not, studying or not, video games or not, engaging or not, running or not, and you get the point.
You got that right!!