Obviously it's ok to teach religion with history, that's the point. Art class is teaching about another culture, part of the curriculum, and culture and religion go hand and hand. You can't teach culture without touching on religion, it's tied too closely. Both subjects are looking at religion throuugh an academic lens, not through worship, which is entirely legal and not a violation of the first amendment. If your school never ta ight you about the ideas of protestant and Catholic beliefs I'm hoping you never even took European history because really there is no way you can understand it without having some grasp of the central role religion a nd religious differences made in European development. We're you even allowed to look at art before the 18th century or so? That'd be awful hard to do without showing a bunch of religious symbolism. What I'm gathering from your argument is that you just don't see hands on learning as equally valuable as more traditional forms of education and lecture, and you don't see art class as being all that big of a part of a student's education.