College is set up among volunteers in country (7)
I believe the answer is:
tunisia
'country' is the definition.
(Tunisia is an example)
'college is set up among volunteers' is the wordplay.
'college' becomes 'uni' (I've seen this in other clues**).
'set up' says the letters should be written in reverse.
'among' is an insertion indicator.
'volunteers' becomes 'ta' (abbreviation for Territorial Army).
'is' written backwards gives 'si'.
'uni'+'si'='unisi'
'unisi' put into 'ta' is 'TUNISIA'.
'in' acts as a link.
(Other definitions for tunisia that I've seen before include "Republic in northwestern Africa" , "Country in North Africa" , "Somewhere in North Africa" , "country-style" , "Land" .)