Please list EVERY case you are aware of of a teacher trying to teach kids how to pray in a public school setting.
Like I said , the OVERWHELMING number of these cases are initiiated over someone who is mad because the school has a CHristian club that people can either participate in or not.
As I also said, last school year we had a guy complain to our board and threaten to sue because he saw a Bible sitting on the seat of a teacher's car in the faculty parking lot.
This isn't about "you're forcing my child to be a Christian" it's about "You god damned Christians need to shut up and keep that shit in your houses" and we don't have to. the first applies to us to as much as you hate to admit it.
If you are arguing in support of teacher led prayer, then the principles involved apply whether there have been a flood of recent cases or not. It is not acceptable and was ruled unconstitutional for a reason, actually several reasons, and those reasons are valid whether a teacher or school district is dumb enough to violate the rulings or not.
Or is a law less valid to you simply because it is not often broken?
Yes, there are cases that are pretty much idiocy. I haven't seen any person in this thread try to claim a glimpse of a Bible in a teacher's private property should be considered Establishment. That's absurd. But when you argue for teacher-led prayer in the public schools what you are arguing, whether you want to couch it in those terms or not, is the right of one point of view to dictate to all others whether, when, what and how to pray using the public schools as a vehicle.
Or maybe the teacher isn't a Christian at all. Or maybe he or she is Catholic and you are Protestant, or vice versa. Maybe he or she is Fundamentalist and you are Episcopalian. Or Mormon. Or Quaker. Or Church of Christ. See the dilemma here? Even the majority will not hold, and the students who disagree with the prayers from that particular teacher will have their own right of free exercise without government interference removed as they are forced by the power of the State to sit through, participate in and absorb prayer from a government authority figure that is contrary to their own beliefs. That element of force is one of the basic elements in any definition of Establishment - and exactly why the Establishment clause exists.
Beyond that it gets more gray as you get into areas where the issues of force and agency aren't as clear cut, but you (hopefully) see the problem here. And that doesn't get to any of the other problems, just the nature of exercise vs. establishment.