Concerns about interrupting during exams (9)
I believe the answer is:
interests
'concerns' is the definition.
(interesting is a kind of concerning)
'about interrupting during exams' is the wordplay.
'about' becomes 're' (regarding**).
'interrupting' is an insertion indicator.
'during' becomes 'in' (I've seen this in other clues).
'exams' becomes 'tests' ('test' can be a synonym of 'exam').
'in'+'tests'='intests'
're' going into 'intests' is 'INTERESTS'.
(Other definitions for interests that I've seen before include "is fascinating" , "Involvements, pastimes" , "Advantages" , "Appeals, fascinates" , "Hobbies or preoccupations" .)