@GrammarHopeful tough one isn’t it.
I’ve always thought exams are unfair. They suit some kids, but not all.
To nerves: As you say, you can’t even play it off with a child like yours. My DS was nervous, but excited (I think excitement that the exam was here and therefore soon be over 😆).
Note also, that I think (?) only about 450 kids or so go into second round ...out of how many (not sure, but a lot). I imagine at least 1000 of the kids sitting round 1 are all top-2 in their class material... huge competition. No telling which child will pass. Of course, your DS has extra elements to cope with. It really is tough...
Mock tests. I don’t think there were any, were there? Aside from the online tests eg Sutton (which we almost didn’t do, but glad we did, since gave good idea of expected standard I think). Again, I can see how no dry run won’t have helped. And yes, their first such exam. Did tiffin make some allowances for your child, eg extra time?
Anyway, here’s to Sutton. And the indies!