首先，school是可数名词，有复数

schools 作为一个词语时，名词，指学校,养成所,专科学校等。

例句与用法如下：

1. When new math was introduced into schools, many parents were perplexed by it.

当学校开设新的数学课时，许多家长对此感到迷惑不解。

2. Recently, many states have insisted that high schools teach students how to drive.

最近，许多州坚持中学应该教学生如何开车。

3. Do you agree with me about the need for more schools?

关於多建一些学校一事，你同意我的意见吗？

4. Many middle schools are crying out for good English teacher.

许多中学迫切需要优秀的英语教师。

5. Schools in this area are piloting the new maths course.

这一带的学校正试用新的数学教程。

6. Our flat is very handy for the schools.

我们的住所离学校很近, 非常方便.

7. His letter to the newspaper about racialism in schools has stirred up a real hornet's nest.

他给报纸写的关於学校中存在种族歧视现象的信件引起了很大的麻烦.

8. A hundred schools of thought contend.

百家争鸣。