Child Support Not Gifted
There will always be various possibilities here that we can keep live in order to identify situations where:
The child is indeed special but not intellectually it in intelligence
The child believes they are but their reality does not translate in our reality
The parents demands and beliefs impact negatively on the child
They are wrongly appraised
They grow out of their gift
There are of course others and we will, in time, meet a cross section. Some will be more common than others but the people involved are all individuals and no one resolution can be expected to "fit all".