I got the impression, from reading the article, that this is only talking about kids with summer birthdays... not kids who are still 4 when school starts.
I watched in my son's kindergarten class, last year, the kids who were failing in the class and they were very cognizant of the fact that they were behind. I felt sorry for them because they often looked forlorn and confused. I also have an issue with "having them waste a year of their productive life." Not sure what's he's trying to say, but I see playing and being a little kid as a very productive and good thing!!
