This board is called Gifted and Talented. This MUST correlate to the government 'Gifted and Talented' programme. It's not a coincidence of the name, surely???
Now, I am real sceptic about the G&T thing, because to say that '10% of the children in a year are G&T' is so flawed as to be ridiculous - it means a child could be G&T, move schools and suddenly not be, despite having the same needs.
But, under the definitions of the G&T programme, and therefore this board, the OP's child may or may not be 'gifted', depending on who else is in the class.
And those who say 'gifted children are those doing GCSEs at 9' or whatever - I would echo what an earlier poster said , and say that those children are the 'profoundly gifted', and it is crazy to dismiss all other children as 'average'.
The reason I am so against this whole programme though is that it totally fails to recognise that children develop at different rates, and a child who is ahead at age 5 may be broadly average by 11. Likewise, a child (like my ds2) who could barely speak when he started reception (due to hearing loss during his toddler years), then forged ahead and got all L3s in KS1 SATs, and is reading and writing about 4 years ahead. But I'm not all 'oh my child is a genius', because it may just be a developmental surge that may then plateau iyswim. However in creative arts he is showing real signs of talent - ie a depth to his work that is not just 'ability beyond his age' but signs of expression in art and music that can't be taught iyswim, and that is where I think his real 'talent' is.