For example, when I was a kid, taking the SAT was pretty simple. For example, you didn`t have any right to look at your test once you turned it in. But, now, you have the "right" to order (for a non-nominal although not extortionate sum) from College Board your SAT test booklet along with a reproduction of your answer sheet (at least for certain test dates) so that you can study what you messed up on. I just spent two hours looking at my son`s May test performance looking for patterns in his mistakes so he can do better on his next try. It`s an intellectually challenging process.
I suspect there are a lot of little angles like that that have emerged in recent decades that help upper middle class families stay ahead of broken lower middle class families.