Is the point of this to enable children to learn?
Age shouldn't come in to it, it should be about learning, and when a child has learnt what they need to learn at that level, they then move up a year and start learning the next level.
Why does it have to be a competition?
Why can't people of any age just be educated at a pace that suits them?
My DD is a mid-August child and wasn't even speaking when she had to start school.
She wasn't emotionally mature enough and hadn't really much of a clue what school was about.
If I could have deferred her till she was ready to learn, we'd be in a much better place now.
As it is, she has low self esteem, few friends, and is struggling with the work expected of her.
BUT looking at her as an individual, she has grown and achieved so much at her own pace. She's doing great for her.
But next to her classmate who is 11.5 months older than her, she's 'not reaching her expected targets'.
Just let children learn, when they're ready to learn.