we have a grammar school too, and a lot of the parents around here actually ask the RECEPTION class teachers at parents evenings if little johnny will get in!!!!
there is also a lot of coaching. most of the feeder schools give the kids taking the exam practice papers. many parents have their kids tutored, which is lovely extra dosh for the primary school teachers who do it as a sideline (not kids from their own schools, usually....) but certainly does put pressure on the kids.
it annoys me intensely because we also have 2 very good non-grammar schools, one of them a large CTC (7-form intake) and the other a smaller country school, both of which provide far superior non-academic subject teaching. the grammar school head is really only interested in A and A* students and there is so much more to life than that. he is also an arrogant prat who doesn't consider anyone else's opinion valid, and prides himself on NOT knowing any of the kids' names.
sport, music, art, drama etc are seriously restricted - there is one team per sport per year (120 kids in each year) and lunchtime clubs are provided for the teams only. extra-curricular activities and pastoral care are minimal and lousy, respectively. the other 2 schools do far better in this area.
please, carriel, in your programme, try to stress that SATs, GCSEs etc are far from being the only things that matter....