Accumulative advantage

I am on Wangs side. I am on his side because I believe that you should put your kids into kindergarten when they are supposed to. I,like Wang believe that the accumulative advantage isn't that great. It most likely would wear off before you go into first grade. Also if you hold a kindergarten kid back an extra year he will already know most of the material and he/she will become uninterested and not want to participate in class.He/sheWill be at the same place as the rest of his/her peers at the end of the year. because the teachers will teach the same curriculum to the whole class regardless of where the child is.