Bush was the butt of jokes and derision, and respected by very few during his second term. Even adults didn't regard him well.
However, in 2004 he was overwhelmingly favored in the election in my 6th grade class. We had a tally in choir and the only kids that supported Kerry were me, my worst enemy, and his best friend/sidekick. Everyone else in the class of ~20-25 supported Bush.
Honestly I don't think this is uncommon. I remember many people from my 3rd grade class-some of which I still know and are hardcore Democrats today-loved George Bush in 2004.
We were all too young to understand policy or anything like that, so I think all we saw as kids was an affable guy on TV.