Camera Stellata
I went to a state comprehensive school and we had an assembly every morning, the teacher would lead a recital of the lords prayer, that kind of thing. Sometimes one of the Deputy Heads would read parables and discuss them / sermonise for a bit. I think its might actually be a legal requirement in England and Wales that state schools perform some sort of Christian ceremony for the pupils every day. I can't remember much of it to be honest, I used to to take naps in assembly.
Before that we used to sing hymns in primary school and do a nativity scene at Christmas.
Anglicanism isn't the most "in your face" form of Chistianity and I didnt leave school feeling particularly religious. I remember the muslim students seeming to be fairly non plussed about it either, they just sat there silently.
If necessary, I think I would be inclined to vote to keep Christian teaching in schools; even if just for its cultural value as a tradition. Much the same reason I would keep Christmas decorations in public buildings and town centres.
That's the UK though, you have a state religion, and a long history of it. If you want the breakdown, England has their Church of England, and Scotland has their Presbyterian Church, both state sponsored religions.
In the United States, we were established as a secular state for a reason. The founders of our nation had the foresight to realize that their religion might not be the dominant religion in the long run, and by separating church from state they were in effect preventing their beliefs from being repressed by other religions in the future.
Separation of Church and State protects all religion's religious freedoms. If you start letting religion in, who is to say yours will be the one in control? The protestant Americans would be really pleased if they had a Catholic Federal Government I'm sure /sarcasm . I'm sure the Jewish in the US would love to have to hear about Jesus in school.
Point is, keep religion out to protect them. Secular states are able to maintain diverse religious ecosystems because government doesn't have a state imposed religion.
School Prayer should be illegal here in the US. Schools should strive to accommodate all religious practices by allowing for designated areas to go and do daily religious tasks in private. However, Teachers, Administrators, Medical Staff, and other state/federal workers should not be encouraging specific religions, prohibiting others, nor using their classroom or school as a pulpit. They need to remain secular, and their contracts probably even state this. If they violate it, we should be throwing them out of the system.