That only works if your kid is in a very expensive private school, for the 1% right? Most common people have no industry insights, all they know is size of their paycheck and how to avoid getting fired.
Of course this knowledge is not hard to get. You just need to do their job 8 hours a day for half a year or so ... or you could have a quick chat where they get to vent about their job and you learn something new. (You don't even need to have kids for that to work.)