I tend to think there is something wrong with telling a group of people they're special when you're by implication saying that people who aren't a part of that group are inferior.
This seems like it could become a TNZ topic easily enough, but my two cents on the topic is that you're correct. Telling a group of people that they're superior must necessarily indicate that those not part of the group are inferior. And that is actually the case when it comes to real life.
There's nothing wrong with acknowledging the truth. Some people are elite, some people are not. There are excellent teachers and mediocre teachers. There are great politicians and aldermen for life. There are world renowned chefs, and there are McDonald's line cooks.
The key comes from learning to handle that superiority properly. Telling the special kids they're not special defeats reason, and will only cause confusion and probably rebellion. Rather they need to be molded in such a way that their gifts are realized, recognized, and utilized -- for a reason larger than their own glory.
The kids on the Valiant had no such sense of purpose. They paid lip service to the cause, but ultimately it was about Red Squad kicking ass -- and that's no good.