Well clearly I think she was wrong with the printing since I never bothered to print out any photos.

I understand her reasoning behind it and it is true for paper scrappers. I would just argue that the opposite is true for digital scrappers. We should be making an effort to have all photos in a digital format since odds are you're not going to stop and sift through photo albums to then scan some old photo for a layout. At least I know I'm too lazy to do that.
I never rearranged any of my dated digital folders, in fact nothing about her class asks you to do that. That's actually one of the huge advantages with digital because rather than duplicating photos or only being able to have them in one place you can easily tag them to be in more than spot. So I have mine set up in seasonal albums and then also tagged for various categories. It makes it really easy to scrap either chronological or more moment/themed layouts, which is really what she's trying to encourage people to do.
I didn't mean to discourage people from the class, I was just trying to give an honest opinion based on my experience. If you're totally happy with whatever system you're already using then it probably won't be worth the cost to you. But if you're looking for a system that will help inspire you to tell stories and make connections over time then it might be something you want to look into.