Say a father want to teach his children a lesson by giving an example of a behavior or thing that is immoral or illegal. Or imagine a teenager want to teach his or her friend a rude action and you as his or her best friend want to advice him or her not to do that. Or a TV program that isn't suitable for children.
How can I as a mother or best friend, tell them that what you are teaching or the example you are giving may have a bad impact on them because they will learn something (like using drugs) that they may want to try that because of the natural curiosity of human being?
I am looking for a word that means "the way of teaching, especially to children, where you teach someone something immoral or illegal not on purpose."