Originally Posted by TennisFan2Day
There is no way to control this. Any parent can hold back their child if they want to. All they have to say is that they don't feel that their child is prepared for the next grade. This has been going on in football and basketball for decades.
This also goes on for academic reasons too. Some people can just afford to give their kids an extra year (or two) to give them a competitive advantage.
It's just the way it is. I know. I graduated high school at 17 years 1 month old and I remember thinking that I would have prefered not to have been pushed to skip a grade.