Crossword Genius

Self-help group covering roughly half the folk on campus (8)

Ross

I believe the answer is:

academia

'the folk on campus' is the definition.
(people on a university campus)

'self-help group covering roughly half' is the wordplay.
'self-help group' becomes 'aa' (Alcoholics Anonymous).
'covering' means one lot of letters goes inside another.
'roughly' becomes 'ca'.
'half' becomes 'demi' (prefix as in 'demigod').
'ca'+'demi'='cademi'
'aa' going around 'cademi' is 'ACADEMIA'.

(Other definitions for academia that I've seen before include "educational environment" , "The world of teaching" , "World of university and learning" , "university life" , "Teaching environment" .)

I've seen this clue in The Guardian.
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