Some schooling for a hundred girls (7)
I believe the answer is:
classes
'some schooling for a' is the definition.
I can't tell whether this defines the answer.
'hundred girls' is the wordplay.
'hundred' becomes 'c' (Roman numeral).
'girls' becomes 'lasses' (lass can mean a girl).
'c'+'lasses'='CLASSES'
Can you help me to learn more?
(Other definitions for classes that I've seen before include "Categories" , "See 1" , "Groups with the same social or economic status" .)