No, because it is obvious past a certain age or once you know enough about the world. At his age, I want him to learn, enjoy learning, and trust his teachers to answer questions. I want him to learn, more importantly, that he can misunderstand something and it isn't the other person's fault. Schools teach the basics of the world, so by definition, are always wrong; but, with just the basics, you can make it quite far in the world...