extramural

形容词 extramural:

1. carried on outside the bounds of an institution or community

ex.tra.mu.ral

adj.（形容词）
Occurring or situated outside of the walls or boundaries, as of a community:
城墙以外的，市外的：存在或位于围墙或边界外的，如在一社区外的：
例句：
the university`s extramural courses.
大学校外设置的课程