Government on Hawaii has evacuated schools (5)
I believe the answer is:
highs
'schools' is the definition.
(high is a kind of school)
'government on hawaii has evacuated' is the wordplay.
'government' becomes 'g'.
'on' means one lot of letters go next to another.
'hawaii' becomes 'hi'.
'evacuated' means to remove the middle letters.
'has' with its centre removed is 'hs'.
'g' after 'hi' is 'hig'.
'hig'+'hs'='HIGHS'
(Other definitions for highs that I've seen before include "Euphoric states" , "Euphoric episodes" , "Euphoric moments" , "Trips" , "States of euphoria" .)