What queations should i ask an agent?

Im looking for an agenet, but i need to what i should be asking the agent I also want to know will an agent work with highschool students, im not accustome to looking for one and i just need a little help, for a start i know i shouldnt have to pay and that the agent shoulg provide cles if needed, what what else do i need to know, o yeah and im a singer and there are alot of angents looking for singers these days what do i do? o and wait theres more my mom doest know anything about having an agent and she thanks it more than just something to have fun with, is this agent thing really serious, like i want to sing but i want to do it for fun i dont want to move, or stop going to school or anything, what do i do?