They'll never let us in on that stuff, a. :-(
I think you are possibly over thinking what goes on in a catholic school.
My two go and I am unaware of anything specific they are taught on this area. Of course there is Holy Jesus and shíte like that but they are informed at home that this is utter nonsense and all made up, while also being told to not repeat these views to their teacher.
Look at me, 14 years of Catholic education and more rounded than a ball.
My father was educated by Christian Brothers - an experience that convinced him that no child of his was ever being allowed anywhere near a Catholic education.
I remember on one occasion he even went so far as to pull me out of some mission to help the poor or some such shďte the local priest was organising at my school - so he probably saved me from getting nonced off there, I reckon. Cheers dad.
We had those assemblies in my first year at school but then they banned hymns. We sang the school song twice a year but otherwise, nothing!
Most people seemed to be in agreement that hymns had been banned 'cos of the jews'......
Shame. We had a wonderful organ.....