J.T.
it sounds like you're kinda bummed on your son's school for issues that are unrelated to this award assembly. i'd take it for what it is, and try not to let your son see your apparent resentment for it. you should go "just in case", you'd feel bad if he got something and you weren't there. be gratious and congratulate his friends and classmates that get awards, as well as their parents. if he does not get an award, use it as a learning experience, everyone can't "win" all the time. why shelter him from such a MILD disappointment? if kids aren't taught and allowed to deal with small disappointments in life, they grow up unable to deal with larger disappointments. take a different day to celebrate him and his accomplishments, and if you feel he's being treated unfairly, certainly address that with the school administration, but try not to let him pick up on your negativity toward this(not saying it's not justified!).