Проверьте пожалуйста мое сочинение, сама писала и не уверена в грамматике. Dear…

Проверьте пожалуйста мое сочинение, сама писала и не уверена в грамматике. Dear Teachers, I want to thank you for your great work. I know how hard it isand understand you, because my aunt is teacher too. You give us a lot of information; you teach us how to live. You have grown me up in this school. The past year has been very hard, but it is full of achievements. I participated in the olimpiad and won the second place in the ‘Satpayev’s readings’. I also am an excellent student and I am proud of myself. Sometimes I do not want to go to school, but then I understand that I must hold my status. Sometimes it is boring to sit during the lesson, but I also understand that I will really need it in future. We are having exams these summer and those teachers who teach us are really worried about us. I appreciate all teachers of this wonderful school and I really respect them.