This is well written for a student IMO. I'd agree that it's overly micro-commented, but I also recall that I did that in college because most professors preferred it to under commenting. I had a friend whose style I'm much closer to today -- well named variables, minimal line level comments, block comments to describe major areas, and overall package docs. He got points taken off for fewer line level comments which really is not fair (and a poor reflection on the prof). But if you're going for the grade you're more likely to do better with more than less.