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:
(A) By a proprietary school licensed by the state; a college, junior college or university supported entirely or partly by taxation;
(B) By a private college or university which maintains and operates educational 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) Which has no sign visible from the exterior of the structure and no other advertising that indicates a nude person is available for viewing;
(2) Where in order to participate in a class a student must enroll at least three days in advance of the class; and
(3) Where no more than one nude model is on the premises at any one time.
(Prior Code, § 6.42, Subd. 18) (Ord. 188, effective 10-2-1998)