@Roussette
As far as Harry and A levels, none of them equipped themselves well as far as this!
I was looking at Sarah Chatto, Princess Margaret's DD. She went to one of the most expensive schools in the country, and left with one Art A level.
So Harry is not on his own with this. The whole family aren't ummmm academic?
I thought William got a 2.1 and decent A level results? I think as a family they’re very variable, academically, but that’s true of most families.
If you’re looking specifically at William & Harry, their parents were of different academic abilities and also differed in their other aptitudes, so it’s not surprising the offspring should differ.
As for Sarah Chatto (nee Armstrong-Jones); She and her brother David were both very creative like their parents. I know she went to Bedales because I know someone who was there a little below her, don’t know whether David did too, but Bedales is the most artistic of the expensive well known private schools, and generally quite alternative with a farm and so on, so that makes sense. It’s not odd that a girl thought suited to Bedales went into a creative career instead of being an academic high flyer.