Firstly , I would state to him clearly that being a son of a rich father does not mean that he could be treated better than other students , then I would tell him that I will ask the whole class to delay the exam appointment , but if anyone of the class refused ; the exam would be held in its currant time and date . The other option is to understand what the real cause which made the student ask for the delaying of the exam , and if it was a valid reason I would consider to do him a makeup exam ; but I would make clear that the make up exam would be at the same level of the previous exam . If the student did not give me a valid excuse for not attending the exam I will tell him / her that if he messed the exam he / her is going to have a zero . In the case of that the student refused all the option I gave to him /her , I will ask him / her to check with the head of the department and explain the situation and the head of the department will choose weather to accept his reason of not attending the exam or not . 