Teach which controversies?
Pratchett, Cohen and Stewart, in their Science of the Discworld, point out that a lot of teaching could be classed as Lying to Children. This is because you simply can't give students everything at once - there isn't time for them to resolve all issues. As a student is taught a subject in increasing detail, the ambiguities and unresolved issues get taught in more detail. When you are a professional physicist, then you are equipped to engage in those areas of doubt and unclarity.
There is no other way to teach. In his marvellous book My Name is Asher Lev, Chaim Potok has the old artist tell the young student to master the old techniques, because only then can you break the rules. Likewise, we teach students the existing rules, and let them "consider the controversies" only when they have mastered them.
But, of course, there is no controversy about evolution or intelligent design much past Year 9...
Potok, C. (1973). My Name is Asher Lev. Harmondsworth, UK, Penguin Books.