Dickensian school line on health body so spurious (9,4)
I believe the answer is:
dotheboys hall
'dickensian school' is the definition.
(I've seen this before)
'line on health body so spurious' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'on' means one lot of letters goes inside another.
'spurious' indicates an anagram.
'health'+'body'+'so'='healthbodyso'
'healthbodyso' anagrammed gives 'dotheboyshal'.
'l' inserted within 'dotheboyshal' is 'DOTHEBOYS HALL'.
(Other definitions for dotheboys hall that I've seen before include "Dickensian school" , "Boarding school" , "Old school" , "School in "Nicholas Nickleby"" , "Squeers' academy (Dickens)" .)