Great many stolen around school (4)
I believe the answer is:
host
'great many stolen around school' is the definition.
'Host' can be an answer for 'school' (thesaurus). I'm unsure of the 'great many stolen around' bit.
'stolen around school' is the wordplay.
'stolen' becomes 'hot' (stolen goods are 'hot').
'around' means one lot of letters goes inside another.
'school' becomes 'S'.
'hot' enclosing 's' is 'HOST'.
Can you help me to learn more?
(Other definitions for host that I've seen before include "Army; publican" , "large group of people" , "TV presenter; large number" , "This man entertains" , "Does he invite a large number?" .)