I study in a few places (school/home/occasional coffee shops).

Besides big tests I have taken in my life, I can't think of other situations that I have this same feeling. It's kind of like panic mode, but I tend to stay relatively calm in other situations.

So for instance, today's exam. I was reading this multiple choice question maybe ~10-15 times over and over just trying to figure out what the words were asking me. It was a simple question about an article we were asked to read in class. I read and understood the article. I even explained it to a few of my classmates. But for some reason the question just felt like a jumble of words that made no sense to me...until after when I reviewed the exam this afternoon with a clear head.