阅读下面短对话，并根据其内容，判断句子的正和误。

    This is Jim's school. There are 2100 pupils in the school. There is a very big playground in his school. There are lots of trees around the playground. So many students in the school like to play ball games on the playground. There are two tall buildings in the school. All of the pupils have classes there. And there is a library. It opens at eight every morning and closes at five every afternoon.