Mocking male teacher in charge nursing a temperature (7)
I believe the answer is:
satiric
'mocking' is the definition.
'male teacher in charge nursing a temperature' is the wordplay.
'male teacher' becomes 'sir' (traditional term of address for a male teacher).
'in charge' becomes 'ic' (abbreviation for 'in charge').
'nursing' means one lot of letters goes inside another.
'temperature' becomes 't' (abbreviation).
'sir'+'ic'='siric'
'a'+'t'='at'
'siric' going around 'at' is 'SATIRIC'.
(Other definitions for satiric that I've seen before include "Relating to sarcastic writing" , "Caustic" , "with comedic content" , "Disparaging" , "Written to ridicule" .)