Welcome to Namsan Middle School in Seoul. There are 500 students and 20 teachers in the school. There are many classrooms, a music room and an art room. There is a library, too.
1) Where is Namsan Middle School?
It is in Seoul.
2) How many students are there in the school?
There are 500 students.
3) What facilities are there in the school?
There are many classrooms, a music room, an art room and a library.
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Would you check the questions and the answers? Are they all correct? What about #3? Are they a good question and answer? Do you have better questions and answers?
All these sound fine. I would, however, get that third comma in the answer to question 3 -- comma after "art room" and just before the conjunction.
The answers given to questions 1 and 2 are correct. However, the answer to question 3 is a bit vague and could be improved.
To answer question 3 more comprehensively, you could say: "In addition to the classrooms, Namsan Middle School also has dedicated spaces for music and art classes called the music room and art room. Furthermore, the school provides a library for students and teachers to access various books and resources."
If you have any other questions or need further assistance, feel free to ask!