Once class has begun, do not leave the classroom for any reason other than real emergencies. Be sensitive and considerate to other cultures. Do not carry on a conversation with another student while your instructor is calling roll, explaining an assignment, or presenting a lecture. Class time is for this course. Do not ask to be dismissed from class to run an errand or make up work for another instructor's course.
Class is work time.
Dress appropriately for class. Tee shirts with vulgar or suggestive pictures or language are not appropriate attire for class. Your right to freedom of expression does not supercede another's right to freedom from offensive language or graphics. Gentlemen should remove hats and caps while in the classroom. It's business, not personal.