Extramural and Interscholastic

Extramural adjective - Carried on outside the bounds of an institution or community.

Interscholastic and extramural are semantically related. In some cases you can use "Interscholastic" instead an adjective "Extramural".

Interscholastic adjective - Used of competition or cooperation between secondary schools.

Extramural and interscholastic are semantically related. You can use "Extramural" instead an adjective "Interscholastic".