Re:Just my personal experience (Score 1)

When I was little, I had to do HW first, but as I got older my parents didn't enforce those rules anymore, and I had to manage my own time. In high school, I actually spent more time playing games (and also programming) than I spent on homework. But I still gradulated 3.9 GPA, so video game usage has nothing to do with grades at all. There is correlation though, and that's just because a lazy student is more likely to play games instead of doing homework. If my HW is done, or I leave enough time to finish it before going to sleep, then there's no way playing a bunch of games (or doing any other activity (that does not include drugs)) will make me unlearn stuff.