The second one where it starts with Math class
As someone who writes books, I'd normally use quotation marks, and the person is obviously talking, so the first one should be correct.
Answer:
One day I was taking a Exam for biology class but, I saw someone constantly staring a my paper. When the test ended I had this feeling that I did pretty well on this test. Days after I realised That I got 100% on my paper but, the person that I assumed copied off me got 100% as well. I care less to bother and I have it just made me feel like that it didn't matter anyway. So I just didn't bother if copies off my Exams.