We officially applied for our second-born son to attend kindergarten next fall. (No, this was not our original plan.) I think it is for the best, though. At the end of the day practicality and convenience have won out.
Our son will turn five next November. He will be only four years old for the first two months of school. We had planned to hold him back a year, but the truth is, he's a bright and gregarious little guy. I think he'll do just fine in kindergarten next fall.