Former pupil educated daughter, getting wiped out (11)
I believe the answer is:
obliterated
'wiped out' is the definition.
('obliterate' can be a synonym of 'wipe out')
'former pupil educated daughter getting' is the wordplay.
'former pupil' becomes 'OB' (abbreviation for 'Old Boy').
'educated' becomes 'literate' (similar in meaning).
'daughter' becomes 'd' (genealogical abbreviation).
'getting' says to put letters next to each other.
'ob'+'literate'+'d'='OBLITERATED'
(Other definitions for obliterated that I've seen before include "completely removed" , "Effaced" , "Utterly destroyed" , "trashed" , "Erased" .)