"Sorry but I honestly don't think non bright kids could pass the 11+. Have you seen the maths?I think bright kids lose places to other bright kids.More often than not those from better primaries state and private."
You are right.
These are the facts:
Grammars take in a disproportionate number of children from private prep schools. Some grammar schools take over 40% of their intake from private prep schools.
Nationally over 72% of children with grammar school places have been tutored outside the home.
As for children in the better primaries getting fantastic preparation for the 11, well my children's school is a highly rated inner city primary. My son, who is in year 5, is in the extension group for maths. He will sit a level 6 paper in the summer of year 6, and will be covering the level six content in year 6, but most of this will be done in the Easter and summer terms after entrance exams. The only way he will do the level six maths in time for grammar school exams is if we do it at home/send him to a tutor.
"What is the point of yet another anti grammar thread when there are far bigger issues at stake which have an impact on an awful lot more children."
I disagree. 1 in 20 children go to grammar school in the UK. These very bright children, and their super-involved and motivated parents are lost to the comprehensive system.
Everyone knows that the very best commercial institutions value their brightest and most hard-working staff because they know what an important contribution they make to the overall success of the organisation. A school is also shaped by the children (and the parents of those children) in it, and if some schools are deprived of the most talented and brightest children, then this will impact on the character and the atmosphere of the school, and on the aspirations of the majority of the children in them.