Help me write an apology letter to my teacher?

My friends and i were fooling around with this camera taking pictures and i guess we started getting loud when it came to the deleting the pictures we didn't like part. our teacher yelled at only 1 of my friends and i and she sent us to our desks. i gave her "attitude" when she came to talk to us.. but i was pist off cause she didn't even know the who story. she called my parents and they didn't really care so she made me stay in during recess and she nagged the sh*t out of me.. and i got annoyed and then she told me she wanted an apology letter for argueing with her during recess when i was just standing there.. and thats when i got mad and i told her i wasn't gonna write one and i walked away. and after break she sent me out of the room and yelled at me and when i got back in a went to the washroom and she came in while i was taking a p*ss and i told her i didn't want to talk to her and that she should just leave me alone and she was like "im expecting that paper on monday sand if yuu don't do it yuu can explain to the principle why yuu didn't do it on monday. please help me