It's like what Malcolm Gladwell said about hockey. A lot of good players are born earlier in the year. When they start playing, they are the oldest and the bi

It's like what Malcolm Gladwell said about hockey. A lot of good players are born earlier in the year. When they start playing, they are the oldest and the biggest of the group, and therefore can excel. Same with school, the Jan-Apr babies are just that much more ahead and it continues throughout school. If everyone pushed back a year, those same early babies would still have the same advantage.