I know the feeling all too well. I HATED school! Well at least at his age I did (high school was MUCH better). I loved the excitement of "first day". The new crisp uniforms, the fresh pack of crayons (yes, to this day I love the smell of crayons) and sharpening all my brand new pencils. But after that nostalgia wore off I was like WTH? And back in my day we got beatings in school so you KNOW I wasn't a happy camper.
I'm glad my son doesn't have to go through that. I think it's so traumatizing for a child. You already have to deal with teachers that are PMS-ing, friends who are as clueless as you, and math that you'll probably NEVER use (has ANYBODY ever used "pi" for anything in life??? remember this "π" = BARF!...then they add beatings to the agenda? SERIOUSLY!?
But I suppose the first day back after any vacation is the same regardless (slump shoulders and insert HUGE sigh here).
I'm sure he'll have a great day once he re-connects with his classmates, but ready or not the school year has begun.