My concern is that there are kids who have always been in the top set, achieved good levels and they don't get in because the test is unfamiliar to them but other kids who are less able, but tutored, do well in the test and end up in the wrong school for them
Do remember test papers are everywhere, Bond books, Letts on line the 11+ forum and so on. There is no reason nor excuse why any child going for 11 + shouldn't have seen and familiarised themselves with the paper.
I think the press or somewhere has gone mad with the focus on pupils being tutored.
You are also up against children who have been in excellent prep schools, with far higher standards, a more academic environment, much smaller classes and more with a view to the end goal being the 11+ or entrance to selective private schools.
From day 1 those pupils have a huge advantage. With their whole early education tauhgt with such an end goal in sight, you may as well say they are being tutored from day one....
Add in, parents who are highly educated, professionals, usually meaning exposure to wider vocab and interests and culture and so on...these kids may even be tutored on top of all of that, but probably won't need it.
They will probably cover all the curriculum they too as well.
Now with over 1000 children going for 160 grammer school place at somewhere like Tiffen...
I would argue I need to give my child as much help as I can, because her school is good but we won't know how good really until we go further with it, and she simply won't have the extras that many others do as part of their daily life.