So we've finally reached the point where DS and I are being asked about school and what grade he's in. Finally the other day I came up with the best, though a little snarky, response. "Please don't ask me what grade my son is, he isn't maple syrup." Okay so I was cracking myself up for the next few days. Just thought I'd share.
Awe, you don't want to be snarky right off the bat with the unsuspecting like that, it's not fair. Like Zinemama said, it's not an unreasonable question.
Oh I didn't reply to the person that way, it just became my facebook status afterwards. I am not that bold.