Dear Jack
Here I am writing to you to reply to your letter. From your letter, I know maybe you are not getting along well with your new classmates.Perhaps several of them are selfish.But I am sure ,most of them should be friendly.just try to communicate with them.Then it comes to your misunderstanding between you and your parents and your teacher. I think it is you who are to blame. You must have been told that both our parents and our teachers are kind to us .so talk with them sincerely to solve the problem.Please pay more attention to your study,and you will find happiness in the knowledge. And remember: you are always my best friend.I hope you can be surrounded by happiness every moment.
Yours Tom