Actually, those last two were discussed in my Social Studies classes back in the early 80's. Never heard much about the Christians or Jews though.
They weren't taught as science? Well, it was awhile back.
I have no problem teaching about the various religions throughout the world in Social Studies classes. Christianity and Judaism should be a part of that. If they try to get into too much detail, the various religious sects would start complaining about the schools teaching religion to their children, and rightly so. That is the right of the parents, not the government. (That could be why Christianity and Judaism may be avoided in Social Studies classes, by the way).
It is when they try to replace science with religion in Science classes in public schools that I want it stopped. There is a proper place for everything, and religion isn't science.