That would be another good idea for a course, but not necessarily. Had what I mentioned been available in high school. I would have taken all three.
I am an atheist, and I believe in the separation of church and state, and strongly oppose any form of religious indoctrination in public schools. But religion, comparatively and individually, is perfectly valid as an academic subject. Only the students lose when it is banished from schools.
Of the pitfalls though, I would be worried that the teacher chosen to teach about a religion is a hater of that religion. I wouldn't want Dawkins teaching the Bible, Robertson teaching the Koran or David Duke teaching the Tanakh. I'd also be afraid of having an anti-Catholic teaching the Bible.
Robertson is certainly not a Jew hater. He supports the Jews and Israel all the time. Cheez.