I have started the summer semester and I am taking an Analytical Chemistry course. We have a test coming up next week (sadly). Just today, as I was in lab, I saw three students follow the TA to the storage room. I thought something was fishy so I tried to look and see what was happening. I saw the three students hand something to the TA (I think it was money) and the TA giving them a stack a paper. I'm not sure, but I think that the paper the TA might have given them was the answer key to next week's test. I'm pissed off about it because the material that we are studying is pretty difficult; the three students will destroy the class curve. I'm debating whether or not I should go talk to the professor about it. At the same time, I don't want to tell on them because I know I will screw up 4 people's lives(all of them, especially the TA, will face expulsion). Should I keep my mouth shut?