VS: why should the children of the 'don't-care' parents be penalised?
Why should children of rich parents - who already have so many advantages - have exclusive access to most of the best comprehensives (paid for with everyone's taxes)?
Why should my well-behaved, motivated children be penalised because I can't afford to live in Richville?
The parents who really don't give a crap won't bother applying to the really good schools anyway, so this change won't make much difference to them.