I'm from the UK and I think that the majority of people think you can't change class. You're born into a class, you can have the lifestyle of a different class if you make or lose a lot of money, if you then have children, they inherit your lifestyle class. This is not a formal rule in the slightest, but it's how most people here think/operate. I'm working class, enjoying a middle class lifestyle now, if I decide to have kids and my situation remains the same, they're middle class; I'm still working class.