Education; it's all in the cards....
I suspect that my wife, Lisa, had a better education than me. She attended a girls' grammar school where as I attended a High School. Most of her cohort went on to university; many to Oxbridge. Few of my contemporaries went to university and Oxbridge was unheard of. But the most revealing contrast, the one that really shows that the class system is alive and well is..... the card games we learnt to play during our A-levels.
Lisa spent her time playing canasta and cribbage (training to be a middle-aged lady who lunches?). I mispent my formative youth playing games such as the charmingly named 'shithead' and a painful game I think we called 'knuckles' (that was the body part that was left raw and bleeding anyway!).
So, if you are checking out prospective schools for your little angels I recommend finding out what card games are popular in the common room!