Given a test, I organised research (11)
I believe the answer is:
investigate
'research' is the definition.
(thesaurus)
'given a test i organised' is the wordplay.
'organised' indicates an anagram.
'given'+'a'+'test'+'i'='givenatesti'
'givenatesti' is an anagram of 'INVESTIGATE'.
(Other definitions for investigate that I've seen before include "Look into" , "Examine" , "check out" , "Explore" , "carry out a formal enquiry" .)