Dear Sheryl,
Your last letter was a real surprise.
So, my school isn't too big, but I think it's quite pretty.
We have ... (здесь число кабинетов в школе) study classes. Most of them are modern classes.
Teachers are also amazing.
It's your turn. What about your school? How many times a week do you do there? Is your school a modern school?
Looking forward to your answer.
Best wishes,
... (твое имя).