In Australia, 'Religion Classes' in State Schools is proscribed by Law to be compulsory. In one state, the Govt introduced a trial 'optional' system. The Churches were wildly in favor (cause they were allowed to do more in that time) till Reality struck. Now the Churches want it abolished, because a greater number than the Churches considered 'acceptable' (and a much greater number than the few who 'fell between the cracks' before) :-) of parents opted to refuse permission for any RE classes.