Yeah, this. Also, in most advanced societies, it isn't particularly likely that your kid wants to work at whatever you were doing.

But there are a bunch of services helping "teach the test" for kids going to college/grad school, and in very, very many ways, middle class (or better off) parents do strive to give their kids tons of advantages that other kids do not have. Is it fair that my kid had access to their own computer and all the books they wanted to read, etc., when others didn't? No, but parents are still going to help their kids.

If we had something resembling a really fair system, kids and adults of any age would be able to take classes and learn whatever, with as much help as they needed. It would be expensive, but fair. That isn't what we have.