I like a lot of what Zenscanner said here. IMO, it is not the age when schooling starts that is an issue but rather what school is. If school is about treating all children as the same and a process to get all children to a certain level by a certain arbitrary date, then it is a bad idea no matter how old a child is. On the contrary, if school is a place where you are recognized for your unique strengths, taught in a manner that fits your learning style, and allowed to explore your interests to a greater depth, then age of entry does not matter. It just becomes a natural extension of what many of the parents on this board do anyway at home for their children. Alas, schools only have so much money and resources so we get more of the former and very little of the latter approach.
