Well, I am going to go against the majority opinion and say that I dont think the OP is being unreasonable.
If schools didn't make parents jump through hoops to enable them to send their kids there, then there would be no need for anyone to have their children baptised for reasons other than faith.
The best secondary schools in my town are CofE and Catholic respectively. Not only do you have to attend church but you also have to show that you do various community works, are a general good person and tree-hugger.
So, 2 parent families in villages where social functions resolves around the church, where the mother is a SAHM who has time to do charitable works all get their children in. And the single mothers on the local council estate don't. Because the various dioceses are different to actual county councils, a lot of the children at the CofE school in particular come from another county - so their parents don't even pay council tax to support that particular school ifswim whereas the local council tax payers have to send their kids to the worst school in town. When all is said and done, the selection procedures are designed to exclude the riff raff (that's my family, by the way) and get the rich kids in. It has nothing or little to do with religion.
BTW, my kids do not follow any religion in particular as DH is Muslim and I am Christian; we don't attend any church obviously, and I work FT, no time to attend committee meetings, do charitable things.
I bet all the posters describing the OP as hypocritical are church going middle Englanders who are all benefiting from these unfair snobbish selection procedure.
Sorry, don't want to offend but people who do not go to church regularly also have the right to a good education for their children. It's about bloody time this link between schools and churches was stopped and everyone had the right to attend the school of their choice without being forced to jump through hoops.
Sorry long post, feel strongly about this!