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We don't have any choice other than to play the game. If we had, we would. And you are right, once in, we'll never step foot in the church again (whether my children do in the future, that is of course up to them).
I don't think wanting what's best for my children is immoral milliezoe - quite the opposite in fact.
I don't want to play this game (I have far better things to do on a Sunday morning than listen to a load of old mumbo jumbo), but if it means getting a place at the closest school which is within easy walking distance, or my wife having to drive a car to school every morning, which is 15 minutes away, probably more at that time of the morning, then we will.
With hindsight perhaps I shouldn't've put the opinion in my original post that I think religion is a load of old hokum, but it just really gets on our nerves that we are having to do this because of the farcical situation that the church has so much influence on the local schools.