Three options: 1) give him a chance. You REALLY don't know him yet. See what his plans are; does he want to take you out to something fun & exciting? Go!! One date doesn't make a commitment, you know. But once you spend some time with him you may find he's a great guy. 2) let him ask (at least) before shooting him down. He deserves a "no" if he invites you "go out with me", which is not much of an invitation; or to do something really lame like "hang out at the mall". You can say "no", or tell him you have "other plans already" for that day. 3) let one of your friends let him know not to bother, you're not interested.
just go but ask him if we can just go as friends if he's new like you said then tell him about everywhere you live and school if y'all go to getter so just as friends then get to know him a little bit and he can know a little about you too so hope this helps you