But consider the size of your child. It does make a difference.
DD5 is at the short end of the scale of her pre-k class, and she's one of the oldest. But there is a girl in her class that is still in 3T clothes at age 5. She isn't being considered for acceleration (neither is DD), but there will always be someone who is extremely small or extremely tall for his/her age.
I don't disagree that size should be a factor, but it shouldn't be the sole reason not to accelerate. Obviously the boy swinging his lunch box would swing it whether your DD was behind him or not.
And thankfully we haven't dealt with girl drama, but a good friend of mine has, starting in K... seems there was a big emphasis on clothing brand and such already. I am thankful my DC do not have that issue with brands and expensive toys, etc, as some of the kids at their schools are lucky enough to have clothes at all (DS7 goes to a Title I school, so the average family income is very low).
