Hi and welcome to the forum
My dd sat the entrance exam last year.
I can't really remember much about it in as much there was nothing out of the ordinary in it (comapred with the 11+ that is).
They have extension questions for the maths which not everyone is expected to answer.
DD didn't do anything for it after taking the 11+ in the September.
It's a crazy day - LOTS of people attending and a bit hectic but very do-able, we experienced one child crying, but expect that was more from the melee than anything else.
If you DC passes you will then be invited for interview (dc only
DD was offered a place but we felt the school too big as she was used to a little village school of just 105 pupils and Leeds Grammar is HUGE.
Good luck to your DD, if you need anything more specific I'll ask my DD when she gets in from school shortly