Allow for custom class order
From the "Classes" page, you could select how you would like to order your classes. Alphabetical, Class Time, or Custom. For Custom, you could have small boxes to the left of the class names in which one could enter their desired order. This would be helpful for people who follow more of a workflow routine rather than a set time schedule.
Herbert Leonard commented
Allow teachers to manually reorder classes to choose which class is on top/bottom in plans without having to put in a time or ABC order
please please please
Or even better, the ability to drag and drop classes in the order you choose.