Sweets and drops the head confiscated outside class (3-5)
I believe the answer is:
all-sorts
'sweets' is the definition.
'drops the head confiscated outside class' is the wordplay.
'drops' becomes 'falls' ('fall' can be a synonym of 'drop').
'the head confiscated' means to remove the first letter.
'outside class' becomes 'orts' (I can't justify this - if you can you should give a lot more credence to this answer).
'falls' with its first letter taken away is 'alls'.
'alls'+'orts'='ALL-SORTS'
'and' acts as a link.
(Other definitions for all-sorts that I've seen before include "See 10" , "Things of various size, shape or colour; sweets" , "A mixed variety as of liquorice sweets" , "Mixture (of liquorice sweets?)" .)