Quote from ixchel
P.S. Also- don't "call out" a person who is in charge of your grade. If, after the situation has passed, you feel you were treated unfairly, go talk to the head of the department. But if you find yourself reflecting on the situation and you realize that all of the students were treated in the same way, there is no sense in throwing fuel on the fire. At the end of the semester, when you have your opportunity to send in your anonymous evaluation of the instructor, you can be honest and detailed.
Totally just my own opinion and how I would handle it, though. If the situation does escalate to an extreme level, then that would be different.
This is definitely good advice. If someone is in charge of your grade and you call them out for something that they didn't do right, and you do it especially where others can hear/observe it, chances are pretty good that you'll be #1 on their list... So there's no sense in making things worse for yourself.
And like I said earlier, there's a big difference between a rough instructor and a tough one. Tough ones want you to succeed and look to pass you and won't pass you if you're not doing it. Rough ones look to fail you and pass you because they can't find a reason to fail you. That's a very important, but at times subtle, difference between the two. In either case, you want to make sure that you know your stuff, think before you act, and just do your best to get through the experience.
Sometimes the instructor doesn't realize they're a rough instructor when they think they're just being a tough one. Calling them out on it isn't all that good of an idea because you'll embarrass the instructor in a way that can be deeply personal, and best to do it anonymously so that they can reflect on their feedback and hopefully improve their own ways of instructing.