For example,a State of the World Seminar takes place each semester.

VOA: special.2009.03.19

I heard that there is an evaluation period for students at the end of each semester.

我听说学生在每个学期末有一个评估时段。

关于课程评价制度 - SpeakingMax英语口语达人

And they must reapply for the awards each semester.

VOA: special.2009.02.19