Meaning of jiào shì:
jiào shì
教室
Noun
classroom; CL:間|间[jian1]
Xuéshēngmen zhèngzài jiàoshì lǐ shàngkè.
学生们正在教室里上课。
The students are having a class in the classroom.
Xué shēng men zhèng zài jiào shì lǐ shàng kè.
学生们正在教室里上课。
The students are having a class in the classroom.