"Abusing your faith" means picking up going to church for reasons other than wanting to go to church? The pragmatic Catholic view might be, if it means the kids get a good education in a school underpinned by a Catholic religious ethosthe motives of the parents are a secondary matter.

But you've indicated that what you want to see is for people to change your minds about religion, of their own free will (assuming that free will is a meaningful concept). So what's this about "removing religious groups nstruction and worship from schools is a matter of principle"?