I have been accused of cheating and copying the assignment from a deferent class while I did not do it. My assignment exactly match to the other class that the teacher claims. The third party who handled this case placed me guilty for the charge. I disagree with them, but they have my paper as evidence and using this against me. How should I appeal or convince them it was a technical error not cheat?

If they have your paper as evidence, what is the "technical error"?

I have been working on a different class's database unknowingly that was exactly the same as mine with a little difference. I didn't even notice the difference, now the teacher has noticed after I submit it and makes me responsible and consider it as cheating.

Can they track your "history" on the other database?

How did you get on the wrong database?

The student who worked before me didn't erased the database from the computer and I considered it as mine. This assignment is being assigned to all classe of the same subject, but they make a little changes.

I still don't understand the cheating part. Did you copy someone else's work?

No I did not copy. I didn't even know the until I got e-mail of accusation from the teacher. I just kept using and working on someone else work and I didn't notice that because the 99% of the assignment was similar from class to class. The teacher thinks that I completely copy from a different student from a different class.
Let me give you an example; There two pens on the table one is mine and the other is yours, they both are exactly the same with a little difference that we don't know that. Accedentally I use your pen instead of mine cause they are the same.

So, for example, one class was to write about a kind of tree -- dogwood. Another class was to write about a different kind of tree - magnolia. (Both have a trunk and leaves and branches and flowers.) You had been assigned the magnolia tree, but had written on someone's dogwood document.

Am I understanding it correctly?

Wouldn't it be obvious somehow that you were working on the wrong document?

Right exactly that's what happened, and she is giving me such a big punish for a simple misunderstanding. Forcing me to get an F for the class, can't retake this class till next fall, and cheating stay on my student record permanently. I am very depressed. Don't know what to do.

So you're saying that it was someone else's work and you didn't notice it?

Did you explain this to the teachers?

Isn't there something in the part that you were writing that didn't make sense with the part that the other student had written?

Did you make corrections on the part the other student had written?

That's the problem, I explained to her. She disagrees and get more furious. She is a very stuborn woman.. she doesn't care and has being doing that to lots of students. All students have hard time with her. She already proved me guilty. I want to appeal:)

Can you appeal to someone higher than she is? If you explain what happened (not uncommon when classes use one computer lab) and can even point to differences in what the other student wrote and what you later wrote, that might help.