Well, as a university instructor (if not technically a professor), if it's on the test, it's in the textbook and was gone over in class (if the University was closed from a hurricane warning, much more frequent here in Tampa than bomb scares, the test will be postponed until everything on it has been covered) and I don't have a TA.

The other stuff is the student's responsibility (get the notes from someone else, don't leave stuff where the dog can get it, come by office hours for extra help.) Education requires both an instructor and a willing student.