Except that the taxes we all pay fund all kinds of services - schools, fire/police protection, roads, etc. I don't see any way of carving out the education dollars.
Like many, I made the decision to send my kids to Catholic schools (approx. 48 combined years) and never received any "vouchers". My choice. My only issue with vouchers is that the GOP has expanded it so much that families with very good incomes can qualify. I think it should be limited to people who truly need the help. A family of 4 making $150,000 can sure as h3!! afford to pay full tuition IMO.