than to have more from the local community on distance places where the academic status is unknown.
This is where the joke is on them, the vast majority of distance places are not going to local families, unless you consider living in Watford for up to
12 months as being local.
Although younger siblings are not necessarily academically the same as the eldest child they will have had the same parental input and there are studies that show intelligence does run in families
Mgnmum, by parental input did you mean private tuition by any chance?
A number of studies show that first born children out perform siblings in terms of academic ability and there is a decrease in academic performance with each subsequent child.
I think it will take some years yet to dilute the affect of taking "local children" (i.e. lets rent in Watford for a few months as I would love to tell all my friends in Harrow and Stanmore how clever my DC is) rather than academically able children. Parmiters and St. Clement Danes, in the mean time, seem to cope quite well with local children to keep their rankings up.
Perhaps the real problem is that the Grammar schools are actually taking in large numbers of average
ability children from much further afield due to the rental properties on their door step. I've actually seen a number of parents with siblings in the Grammar schools claim on this forum that the academic intake is very diverse. Lets see how the GCSE results pan out over the next few years.