Changed the database a bit, the courses table no longer stores the grade in the course, it would have been nice to have that stored so that a print of the course list would show the current grades in each class, but I foresaw a number of problems that would occur once I added further commands such as assuming and assigning grades, this value would have constantly had to be recalculated on every change, so I made the change. This does away with the need for a Course class for the course list, since only names will be in the list now.