Is having access to past exams cheating and, if yes, could it be proven just by a good grade? I studied for three weeks straight for an exam because I was really anxious to pass it with a high grade, while everyone else didn’t study much. Now the problem is, I had access to the exam from the previous year because someone gave it to me. I don’t know where this person got this exam, but I think it was made public after he completed his exam. The thing is I don’t know if I was allowed to have them or not.

Now the exam is over and I didn’t receive my grade while everyone else received it. The average grade for the exam is approximately 50%. Now my professor wants me to see him in his office about the exam, but doesn’t tell me why. The only explanation I can think of would be cheating. My guess is that I scored way higher than everyone else and now I’m kind of panicking. 

It’s also important to note that on the exam, half of the questions were very similar as the one from previous year and that no material was allowed during the exam, so I could not have looked at it while doing the exam. Also, I have a high GPA, so it’s not implausible for me to have good grades.

Do you think I could get in trouble for having access to past exams even if there’s no way someone could know I had access to them? And is it really considered cheating?



UPDATE:  Thanks everyone for sharing their thoughts on the answer. I'm writing this answer to give some feedback. So I met with my professor this morning and I admitted having the exam from a previous year. I went with honesty, because I thought that it was the best way to go. The professor was happy about my honesty and he just asked me to elaborate some answer which I did. He saw that I knew my theory well and he didn't punish me further for it.
You haven't said whether you were actually accused or not. I'm assuming that you are just worried about what might happen in the meeting that hasn't happened yet. 

The most honest way to proceed, though you may suffer for it, is to tell it exactly like it happened. You studied three weeks, you had access to old exam materials and used those to prepare. All you had in the exam was your memory and your skills. You had no knowledge of any question to be asked on this exam. 

If the professor thinks you cheated, then s/he is very naive about how the world works. Student fraternities typically keep records of old exams and students study from them. If the professor uses old questions they should expect that those questions are available. 

You might be asked for the source of the materials and you would be unwise to conceal them and might face larger issues if you try. 

As the answer of Azor Ahai suggests, make sure that what you did isn't explicitly forbidden by  available course materials. But I don't really see a way in which requirements could be stated that really disallow such a practice. It would be completely unenforceable. Doing well is not a crime. Studying hard is not a crime. 

If your professor disagrees and wants to punish you, I'd suggest taking it to a department head or dean, again explaining exactly what you did and how. 

If you suffer for honesty, then it is deeply unfair.