The Deadline

Tommy and Jay had to turn in this paper at the end of the school year. But this assignment was at the beginning of the year. No problem they thought but they slacked off big time and didn't finish the paper. When they got to school the teacher said they made the deadline and they were the only two students there at school. But the teacher was saying "you didn't make the deadline" to the empty desks. Had the teacher gone crazy or is she a demon...