I think living a good life and doing something that benefits other people (aka earning money) is a good idea. If somebody disagrees, he can of course take his kids and go live under the bridge and open his school there. Let's see where we'd have more applicants - in a school that teaches kids how to be successful or in a school under a bridge that teaches them money is nothing, you can subsist on garbage and live in cardboard boxes forever. I think you can predict the result - and explaining this result would also explain which system is better, in opinion of your peers.
That's still indoctrination. I'm not sure why that's hard to understand. You can make all the assertions you like; you're still indoctrinating a particular value system.
OK, it's indoctrination. Teaching kids to use toilet, wipe their butts, wash their hands and not put a fork into an electrical outlet is an indoctrination too. So what?
Can you tell me why these are good things to prepare people for?