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 shïte the local priest was organising at my school - so he probably saved me from getting nonced off there, I reckon. Cheers dad.
I would never send him to a Jewish school. Those truly are places of indoctrination.
Sending him to a CofE school still makes me do a bit of sick in my mouth, but at least it is all light touch and based almost entirely around Christian 'values' rather than any supernatural ****e.
Our decision was between the non-faith school round the corner and the CofE school, and the latter is demonstrably the better school
I have a major issue with all faith schools, tbh. Not because I am one of these tedious atheist types, but because I've always felt that their very existence is a tacit admission by the various religions that they are very much in the business of brainwashing children with their nonsense and I really don't believe that ought to be allowed.