The term 'Blue-Book Filler' refers to a person who is responsible for filling out blue books, which are used to record answers to exams, essays, and tests. The job requires four letters for the word 'EXAM, ' five letters for the word 'ESSAY, ' and six letters for the word 'testee.' Blue-Book Fillers are typically hired by universities or other educational institutions to help with the administration of exams, essays, and tests. They are responsible for ensuring that the blue books are filled out correctly and accurately, and that all answers are recorded properly.