In the 'Garnethill' trilogy people always forget that Maureen O'Donnell's dad was a journalist and she did art history at uni and her brother did law but no-one ever thinks they're middle-class - they're just working class because they speak with accents.
In the ideal classroom the teacher is either spending all of their time doing deep interventions with students on a one-on-one basis or facilitating true interactivity - labs simulations projects.