The founding fathers knew that it was wrong to teach a certain religion, so Benjamin Franklin wrote as to what should be taught:
I'm not familar with the full context of this passage, but I see no mention of teaching religion in state-funded schools. Will you please point out where Ben states that?
BF: I believe in one God, the creator of the universe.
LDS: This is the best method because it shows the views of all religions without breaking the first amendment.
How does studying only monotheistic deity-worship show the view of all religions, exactly? You do realize there are other spiritual frameworks out there, don't you? Not to mention atheism.