@PurpleTitan I think you may be right but I can’t find anything not behind a pay wall.
Either way, it has became far more grim in the US over the last generation: https://www.theatlantic.com/business/archive/2016/07/social-mobility-america/491240/
Purely anecdotally, I am the only person that I grew up with in a post-industrial neighborhood who is earning more than my parents and has attained the supposed holy grail of middle class life: home ownership. Literally, the only one (that is not a brag, it is a lament). I was also one of the very few who has completed their college education, though several are still taking a class here and there into their mid 20s, trying to cobble together a degree while working full time and barely keeping afloat (and in many cases, not staying afloat at all).
I was lucky to move into a school district just before high school that was in a significantly more well-off area and the difference was night and day. College was expected, not a pipe dream. There was some help with how to navigate the college process rather than counselors spending all day working with so-called “problem” students.
The benefits that upper middle class students get are incredible compared to most lower income students. That’s another reason why when I hear about frustrations, it is really hard for me to have sympathy. The child is almost certainly going to do as well as their parents based on the solid foundation they have had since infancy. Even if these students, gasp, end up at the same public directional as the low income kids, odds are that they will still excel exponentially over the lower income students.
I’m rambling now. My apologies.