Hello! You didn't say what you are studying - but if its healthcare, your school has a huge problem. Your instructors are allowing the ,"group mentality" in this situation, and frankly, it's discriminatory. I would go into the administration office, and have your doctor's paperwork in hand. Next, I would inform the most high up person that you can think of that YOU want a meeting with ALL your instructors. Ask them in person how they would feel if YOU allowed the students to berate them for taking breaks. Everyone needs to be treated with respect, and they are not treating you in this manner. Offer to pull out completely, and call the Agency for Healthcare Administration in your state. Incidentally, if you are not in the healthcare field - it's still discrimination!