Hi there, all of the kids I know who got offered a place this year (because note, you can pass but not necessarily score high enough to be offered a place), were either extensively tutored and or went to TOP private schools. I am totally on the same page of BawdyStrumpet and a true believer entrance to these schools should be means tested. Anyway, irrespective of my views, the competition is getting tougher for entrance to grammar schools. With tough economic times, both private and grammar schools have seen record numbers apply and really bright kids who would in previous years have been offered a place, now not having a hope in hell because the standards are so high. I know of only one person who got in with minimal tutoring just before the exams, but tutored nonetheless, who was a wizard at maths. Not sure I'm convinced that there are many who could do that now, although I am sure not impossible. I'm convinced that kids getting places are scoring more or less a 100% or not far from it. A friend of mine's ds was offered a place but was debating between the grammar and a private school she was offered. When she called the grammar school to see where he scored comparatively, thinking that is he was somewhere towards the bottom, she wouldn't put him through the pressure, they said, for the kids that get offered a place there is not more than a point between them - it is that tight.
If pennies are an issue, then definitely start with bonds books now to learn the techniques leaving the year leading up to the exam to focus on speed. I also HIGHLY rate the Stephan Curran books (who also run courses which I have no experience of but have heard they're great and get booked up early). They're are not the most attractive books in the world but great for teaching technique.
My ds school btw, were never supportive of parents, who were thinking of grammars as they thought the local school was just fine, so you may have to take his teachers view with a pinch of salt.
Admittedly we did the grammar's as a back up as we were eligible for one of the top catholic comprehensives and fortunately got a place.
And please, please, please, if you are going the tutor route, please go on recommendation and 'recent' track record. This area is not regulated and I can not tell you the amount of rubbish I've come across. One was charging us the earth and when I stood quietly outside and listened in on one session was giving my son the answers.