A sobering responsibility,
trying to supply the necessary tools, inculcating just the principles of ~ 'how to think to some purpose about ___ (anything)'. {sigh}
Offhand though, I can't think of a worse ego-trap than - imagining one can 'teach teachers' (unless you are that rare one who is good at expressing principles via damn good stories - like the Sufis?)
All I can come up with is - looking back.. what do I wish my esteemed educators had mentioned ever so briefly - before I had to find out by the usual processes of disillusionment?
1) Country was founded by pretty-wise folks, with pretty-fine 'Principles' stated in almost wondrous prose. These are Ideals, pretty hard to follow - but very good guides.
2) Many folks who live here, are not well acquainted with what these founding folks meant - but claim that they do understand. Be aware of the differences between what people say they believe, and how you see them 'living'.
3) Adults (also) lie, quite a lot - while advocating that truth-telling is better. It's a human thing, since everyone feels inadequate in some area of life. You can (I hate 'ought' in such matters) try to do better; try not to pick just the easist course.
4) What you can remember to do is: listen carefully. Later, use your best mode of thinking about what you hear. Discard the obvious puffery and nonsense: add what's left to your own store of sensible views. Keep refining those. No one can do this for you - not even I, your Parent God.
Oh and..
5) Question Authority. Yes, it was a cliche a few decades back but - remember that everything you read or hear was said by someone human; none of those utterances IS "The Truth" about anything - it is only a pointer (if it's well done). You have to fill-in the meaning, for yourself.
6) Good Luck, Kid!
Well.. anyway: Good Luck to You. Yours is the most difficult of all human duties, but at least you understand that! Probably that will keep you er honest ;-) Gawd help the kids with parents unclear on most-all the concepts :(
Ashton