Even where communities are mixed, many inner-city families go to extraordinary financial and geographic lengths to ensure their children do not go to school with children from 'the flats'.
The tricky truth is that change goes in both directions.
The Assisted Places Scheme was a controversial policy that got 75,000 poorer pupils a top-tier education. Or so it was claimed.
By focusing on intergenerational inequalities that will eventually be reversed, we are framing the housing affordability question the wrong way.
'Posh white girls' are unjustifiably taking the brunt of reports of the last art history A-level but casualties are all those the exam board had been moving to reach out to.
For years, social scientist have assumed that it's class that determines a person's health and well-being. Have they been barking up the wrong tree?