With sibling rule and cross sibling and few by distance, expensive housing, they are if anything more than grammar, they skim a small slice of top ability than real grammars, ie lincoln or kent. And results are right up there. This is no way they are comprehensive,mtake so few local children by distance, diverse background.
The whole system a mess.
Have some difference of emphasis of schools yes and communicate clearly to parents, but over testing all this craming mad, plus long traveling.
I appreciate you re having a rant; but sibling and even cross sibling are typically comprehensive features. Fully selectives/grammar do not have sibling policies. Also have you seen the kids at the Watford grammars? They are certainly diverse in background, they are all local as you cannot get in if you don't live locally. I agree that the pure distance rule is open to manipulation and I would like to see more done here.