Yes, there are (said as a former homeschooling parent). The problem for PG kids is that their trajectory often takes them further and FURTHER from those age norms the older you get.

By the time external authorities become truly very rigid about age-guidelines, that's when you MOST need people to have an open mind. And they don't.

So yes; I second ABQ's philosophy. If only I could roll back to when my DD was under four. Oh, my-- the things that I would do differently.

Schrödinger's cat walks into a bar. And doesn't.