A. It is a defense to prosecution under this chapter that a person appearing in a state of nudity did so in a modeling class operated:
(1) By a proprietary school licensed by the State of Pennsylvania, a college, junior college, or university supported entirely or partly by taxation.
(2) By a private college or university that maintains and operates educational programs in which credits are transferable to a college, junior college, or university supported entirely or partly by taxation.
B. Notwithstanding any other provision in this chapter, movies rated G, PG, PG-13, or R by the Motion Picture Association of America (MPAA), or live theatrical performances with serious artistic, social, or political value, that depict or describe specified anatomical areas or specified sexual activities, are expressly exempted from regulation under this chapter.