Some help?

Something similar like this once happened at my school, but it was a big exam and the kids who roubou it made copies for everyone else who wanted.
They got caught and were punished along with some of the people who had access to it.
My point is, you should never cheat like you wanted to, because not only you would regret it and the punishment you would get would be even worse if someone found out.
It doesn't matter what the others think of you for not deciding to cheat; what matters is that you didn't and you should be proud for not going down to their level, because they might have gotten access to the answers, but that doesn't mean they will when the other one comes.
About your dad, call him and calmly explain what happened and why it happened. If he gets mad at you, explain that at least you did it fairly and not por cheating.
And to make up for it, before the seguinte exam comes study harder so you prove not only to those kids but to yourself, that you don't need to cheat to get good grades.

Be straight up with your dad n explain you were trying to do the right thing.

Just tell your dad you didn't want to cheat and you made the right choice.
Those kids are the ones who should go stick there faces in someones bunda for making you think your retarded.-_-

First of all i commend you for not cheating. Cheating gets you nowhere at all and you should be proud of yourself.
Don't worry about what the other kids at school think, they mean nothing to you. If they can waste their life cheating, then they're not worthy of your time lovey. Don't worry about them.
As for your teacher and your father, calmly explain that yes, you didn't study as hard as you could have, you have learnt your lesson and when the time comes for you to take the real test you will study twice as hard to up your grades.
However, i only advise you on this bit as it is up to you - will you tell on the other students for cheating?
If it were me, i certainly would have done. I'm that kind of person. However you have to think of the consequences to tattle-telling. Even though the students may not automatically assume you told, they may turn on you.
but if you don't tell on them, and your teacher finds out you've been hiding information from her/him it could come down even harder on you.
Your father will understand, surely he took exams and felt pressurised. You could involve him a little also, show him you trust him to help. Once he's gotten over the disappointment of you getting low grades, he'd feel so happy you're pulling your finger out and asking his help to teste you on the respostas or explaining difficult things that he'll soon forget all about it.
Over-all just remain calm. :) i give you the best of luck X