This is a cool game, even though I didn't find it as hard to tank the exam as others seem to.
I like very much that there is no cleary determined winstate. In my first playthrough I actually found myself happy that I 'lost' by doing nothing and therefore have Pete buckle down to study. It's like not shooting in a realistic Shooter - a conscious decision to not act harmful in a manipulative narrative.
Mastering the guitar is likewise satisfactory, though I have to argue that, in comparison, the portrayal of video games as merely a distraction without a merit of its own is rather cliché.