The person accused together with me is a friend and I believed him that he didn't see my exam. However, after schools investigation, they think we collaborate in this test and We will get F in this course. I become skeptical that my friend may lie to me and did copy my answer. Now I have a chance to appeal to higher authority in the school and I just don't know what to do and what may happen to me.
The thing is that the exam is take-home and the other person lives the next room in my apartment, which is the main reason that I have doubts on him. I think we are found 'guilty' because of the similarities between our exams. And I go to school in the U.S. This means a lot to me and any help is appreciated