It never ceases to amaze me how many parents state that they have gifted children. These children usually turn out to be of average, or just above, intelligence. In total I taught for 52 years,in both UK and Australia, so I do know what I'm talking about. Please, for your child's sake forget about how intelligent you think they are and be guided by the professionals.
I almost always agree with Quoll's posts on education, but disagree that children from the UK are more advanced than their Australian cohort. This has not been my experience.