Knowing that it is difficult for you to adapt to your new school, I felt very sorry. As a matter of fact, I was in the same situation at the very beginning of this term. Here I'd like to give you some advice on how to adapt to the new environment as follows.
First and foremost, I think you should have a chat with your classmates when you have spare time. Only in this way, can you have a better understanding of each other. What's more ,when facing some tough problems, you migh seek your teachers for professional help. After all, they are the ones that you may trust most. Last but not least, It's a good idea for you to take part in the various sports activities, such as running jogging,playing ping pong. etc. which would be of great benefit for your health. Definitely /obviously, Good health can help you concentrate your attention in class.
I sincerely hope that my advice can be helpful to you. If you have more problems, don't hesitate to let me know.