Actually, I was an early reader. I could read and write at 2.9.
The upshot of this is that I used to scare myself shitless with Stephen King books when I was 7, and HP Lovecraft when I was eight or nine.
And nothing else. I never excelled in English. I passed my GCSE with a B. Science was my pet subject, despite all the early reading, I never stopped being fascinated by rock pools.
My father is disappointed with me, he thinks he had this genius daughter who inexplicably got thick and lazy, and he doesn't understand why that happened ..... What actually happened was, my peers caught up, and the more clever ones overtook me. They were more clever when I was five, the difference was that I could read.
If you knew me, with my turn if phrase and higher than average vocabulary, you would perhaps imagine that I am verbally intelligent because I learned to read early, but in fact I am very similar to my sister, who didn't read until she was seven and has read about twelve books in her entire life.