It is a defense to prosecution under § 7-11-17 that a person appearing in a state of nudity did so in a modeling class operated:
(a) By a proprietary school licensed by the state or a college, junior college, or university supported entirely or in part by public taxation;
(b) By a private college or university which maintains and operates education programs in which credits are transferable to a college, junior college, or university supported entirely or partly by taxation; or
(c) In a structure:
(1) That has no sign visible from the exterior of the structure, and no other advertising that indicates a nude or semi-nude person is available for viewing;
(2) Where in order to participate in class a student must enroll at least three days in advance of the class; and
(3) Where no more than one nude or semi-nude model is on the premises at any one time.
(Prior Code, § 7-11-20)