The faith schools do not discriminate because anyone can go to them if we are talking C of E.
Do you want to send your child to a faith school or not?
If the answer is yes then you must see the benefit of a faith school education. In which case why do you have a problem in going to church?
If you don't want a faith school why not send your DCs to one of the two non faith schools.
If one was to follow your argument and faith schools were abolished how do you think places would be allocated? the nearest children to the school going? And how would that be fair as of course the wealthy people would get the places thus discriminating against the poor.
How would the country's education system be better if faith schools were abolished? I have yet to hear any convincing arguments...