This may seem like a trivial idea, but it's also a very easy one to implement.
Please use Title Case throughout the menus and navigation. Instead of Requests and schedules, it should be Requests and Schedules. You already have it in some areas, like the Select Filter Options text on the Enter grades by student screen.
John - I agree, although more from a standpoint of consistency, which is greatly lacking across the entire system. These little things add up to a lack of cohesive feel for the users, who are often low-tech and high-stress. Each tiny little diversion from norms contributes to the overall pushback we get and the general impression that the tool is sub-par. This impression makes my job (increasing adoption and understanding) substantially harder.