Passe, it's as much about personal experience and anecdote as it is about stats. And please don't feel you've wasted your time
- he's your son and it's your decision!
I taught Y6 and IME not one child who didn't have SEN and had interested parents arrived with me without being able to read and write competently. And they came into school with widely varying ability.
Also, from my knowledge of Scandanvian countries, they start formal learning at about 7 or 8 and by 9 are beating us hands down in reading and writing. All their early learning is experiential and verbal. "Learning through play".
From my own experience, I was an exceptionally bright four year old - could read and write fluently by the time I started school and was top of the class througout my primary education. By secondary many of my peers had caught up and although I did well at A levels and degree, it was nothing outstanding.
Finally, my little boy is four next week - his early childhood has gone so fast and I don't want to waste (my opinion) one moment of that teaching him to read and write when I could be outside digging for worms, cycling, looking at flowers, bundling with his buddies, etc. He will have at least 14 years of formal education, and his Foundation teachers are trained to teach him. I read with him every day and he will learn to read and write, just not yet
.
This is all my opinion though and others make their own decisions. The only time I get
is when parents try and bribe or cajole their children to learn early - then it ceases to be about the child "desperate" to learn and becomes about the parent "desperate" to boast.
HTH
.