Narrative essay

I'm writing a narrative essay. Please check it for me.

" Three years ago, when I was in grade 10, I was accused for stolen my classmate - Jane's cellphone. On that day, we learned Maths, English, Physical education, Physics. On Physical Education lessons, we had to get out side the class to practice, but that day I was very tired, I had a permisson from my teacher to stay in class to rest, I'm the only one stay in class. When the time for Physical Education is over, Jane got back and about to take her cellphone out to play, but it was not there she looking everywhere. Because I am the only one stay in class, so Jane and all my classmate accused me for stolen her cellphone without any thought, even my best friend in class thought I was a thief. After arguing for hours, they still believed I was a thief, then suddenly a friend of Jane from the other class brought her cellphone and thanked her for let him borrow it earlier. All of my classmate was stunt, they appologized me and felt shamed for what they had done to me. Although I accepted their appologize, I'm still very disappointed about they, especially my best firend, who I really believed in. Since then I had learned much about life, about how my friend treated me when I'm in trouble."