Don't worry too much about it. Even if he gets that label, I promise you that he'll be fine. It's hard, yeah, but it's also not a death sentence. A neurologist once told my parents that I'd never make it through high school, and I'm halfway through a CS degree.
DO NOT allow the school to do the testing though--in most states, if you ask, they are required to pay for an independent neuropsych. Schools can and will hire the cheapest neuropsychologist they can, then skew test results so they don't have to provide services. This isn't to say all schools are awful (this is patently false), but you are your child's best advocate and one of the best things you can do for him is to have independent testing done.
Cheers!
-hidingmyusername