I had a conversation with my husbands' granddaughters who went to state catholic senior schools, this would have been in the last ten years. At that time they told me their school discussed contraception, abortion and it was obliged to as part of sex education as set out in the national curriculum. These days there is far more wriggle room in the catholic religion, clerics are no doubt very aware they, are part of an institution which has found itself on the wrong side of the argument so many times, I think now there is a bit of a piecemeal approach to what followers adopt. Abortion is forbidden but as far as contraception is concerned the standard get out clause by individual priests from what I understand is they leave it all up to the individual's conscience. The church has to be mindful that in the wake of never ending historical wrongs they no longer have a vice like grip with the younger generation they once had over more compliant and unquestioning followers, particularly in Ireland. I also think as far as blasphemous images relating to the Christian religion per se is concerned, the general consensus and expectations of society is that whilst they might upset some, no one is going to do much about it.
Islam imposes more rigours and strictures, maybe like Catholicism was once. Possibly whilst Islamic schools should also be bound by the curriculum I imagine they will refuse to teach anything that conflicts with their own beliefs. I think that would be the same for Orthodox Jewish schools. As far as all the hoo ha surrounding the cartoons is concerned I think there are more important issues, for example relating to how girl children are treated, not always as equals. I don't expect everyone to share my point of view, I'm just thinking fighting battles on every front isn't going to improve social cohesion and as someone pointed out up thread that just may make Muslims feel they are being unfairly targeted.
I'm probably playing Devil's Advocate, I don't think the teacher was wrong, I think he was foolish. Should he be outed on social media or mob tactics used outside the school to intimidate, absolutely not. Should be grounds for prosecution.