There is always going to be a "youngest" child in the class.
So now, they've change most of the cutoff dates around the country, it seems (thank GOD my kids started school before they changed ours...I can't imagine holding my DD back (Oct birthday) and have her be a Junior in high school now, rather than a Senior). And now that they've done that...Sept 1 cutoff, or whatever, the June, July and August kids' parents don't want THEM to be the youngest and less mature kids in the class, so they'll hold them back. Then there will be tons of kids being held back still, so the population of the grades will be off from the official cutoff, so they'll change the official cutoff to June 1, because that's what people are doing anyway. So then the March, April and May kids..well, heck...don't want THEM to be the youngest kids in the class, so we'll change the cutoff date to...let's try "April 1"...but what about the poor January, February and March kids? The youngest kids in the class!

So, let's hold them back...