A project for Java class

I need a program that will determine the letter grade of students of a class (university class, not java class) using class (java class), objects, exception handling and collection. It needs to create some classes to make the program modular. Most of information should be in the document, and can send me a message if you have any questions. Also, I have included a document that gives a lot of hints so should make the programming much easier and give you a better idea of what the instructor is looking for. This is due on January 11th at 11PM.