The only way I can see that would becompletely fair, is to create more grammar schools.
The school we applied for openly states on it's website that they expect more children to be deemed suitable for a place than they can offer places to. That just seems so wrong. It's no wonder that parents resort to tutoring. They are not being coached to pass the exam, I expect many of them could manage that without additional help. They are tutoring to try and ensure their child scores way over and above the pass mark, because that is the only hope they have of getting a place.
Ds1, who has AS, is very bright, and I truly believe that the grammar school will be the right environment for him. He could achieve just as much academically in the top sets at the local comp, but I want him to go to the grammar because of everything else it will offer him. Incidentaly, I don't think it will be the right environment for ds2, even though he is bright as well.
I do believe that tutoring makes a huge difference to the scores children can achieve, it teaches them how to pass the exam, not how to answer questions correctly. What hope have I got of being able to teach my child using a couple of books from WH Smith compared to a professional. The cost of the books would put alot of very attentive parents off anyway at £10 a book. That's £30 just to buy one for each of the subjects, and only one practice paper included in each.
And of course prep schools tutor! Anyone who thinks otherwise is very naieve. They want their pupils to get into selective independant schools or grammar schools, being able to say that a high percentage of their pupils get sought after secondary places is one of their biggest selling points. I went to a private primary, and even back then (20+ years ago)those of us that were taking exams for selective schools got extra attention in Maths and English lessons, go given different work and were introduced to NVR/VR when we'd never heard of it until that point.