学生要遵守学校纪律。

Xuéshēng yào zūnshǒu xuéxiào jìlǜ.

Students must follow school rules.

老师有责任维持课堂纪律。

Lǎoshī yǒu zérèn wéichí kètáng jìlǜ.

Teachers have a responsibility to maintain classroom discipline.

学生们应该遵守学校的纪律。

Xuéshēngmen yīnggāi zūnshǒu xuéxiào de jìlǜ.

Students should abide by the discipline of the school.