Fifth grade elementary school and he reached very well in fact, accepting that science and religion are two separate subjects.
I'm not sure that it has dawned on too many of them though that if science is right, then certain parts of the Quran/Bible cannot be literary true but we'll cross that road when we get there.
We have talked a lot in the religion classes about that everyone must choose for themselves what to believe, or indeed not to believe, and seeing as this is a multicultural school this is very important for them to understand.
The science part isn't much of an issue though, seeing as most of the pupils love science and many claim that it is the subject they like the most in school.
I know that my reply to him might seem harsh to some but there is in fact some deeper thought behind it. It was meant as a deterrent against "muddling the waters" if you will, and avoid bringing religion into the science class, something which inevitably would lead to conflict. And while I am not averse to conflict and robust discourse I do not think that I should spend my science classes telling fifth graders that the stuff they read in the Quran/Bible is faulty. They will figure that out by themselves soon enough, and then they will themselves have to choose which path to follow.