At parents' evening tonight both boys' teachers said things like:
"I need to continue to make sure he is stretched and stimulated, especially this final term of the year."
"The project work enables him to take things to a higher level, and I encourage him in this."
"He was starting to coast a bit, so I have pushed him to make sure he stays motivated."
"Do you have any suggestions of things you do at home to challenge him?"
We never ever mention G&T or brightness or similar. It all comes from the teachers, and they are keen to do as much as they can!