Thank you for addressing this as I had been wondering as I did it by year which one was the best to choose. I am mostly just trying to find how I want to do a grading scale because I am not much liking regular a, b, c, d, f. I usually give + and - on the grades that deserve them and am trying to figure out a way to change your transcript sample to where I can do that and figure out how to do the GPA figuring with it. The grade scale and trying to figure out if I should learn how to do weighted grades are what keep me up at night working on this thing and re-doing his transcript numerous times trying to figure out what I like and how I want to do it before the time to send in everything with college apps.
Lee has a blog post that you might find helpful in this area: Do Colleges Care about Homeschool Grades?
Also, The HomeScholar's A La Carte Class, Making the Grades (Online training) will teach you how to estimate grades without complicated systems.
Assistant to The HomeScholar