§ 143-231. Exemptions.

It is a defense to prosecution under §§ 143-221 and 143-228 that a person appearing in a state of nudity did so in a modeling class operated:

A. 

By a proprietary school, licensed by the Commonwealth of Pennsylvania, or 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.