[Chaguito]

Cute reply, but obviously simplistic. If the professor is an atheist, the presupposition of the class is that all the religions studied are false. Therefore, any objective evidence for the veracity of one or more will be selectively ignored (probably) in favor of the "purpose" of the professor. Therefore any claim to impartiality is specious from the beginning.

[aNYCguy]

Cute reply, but obviously simplistic. If the professor is an atheist, the presupposition of the class is that all the religions studied are false.

Maybe true, but the same concern exists no matter what his religious beliefs. If Christian, he believes Jesus is the messiah, and that Jews and Muslims are flat-out wrong. If Hindu, he believes those who don't believe in the thousand or so deities in his pantheon are simply misguided. Only a professor who truly somehow "believes in everything equally" could hold the level of impartiality you desire.

Frankly, an atheist teaching about religions in good faith seems a fine choice. Note that I am not claiming this professor in question necessarily acts in good faith.

[Oztrich Boy]

If the professor is not an atheist, the presupposition of the class is that all but one the religions studied are false. Therefore, any objective evidence for the veracity of the others will be selectively ignored (probably) in favor of the "purpose" of the professor. Therefore any claim to impartiality is specious from the beginning.

[Chaguito]

Hence, impartiality is impossible. As in everything.