Evaluation of idiots on street collecting team (10)
I believe the answer is:
assessment
'evaluation' is the definition.
(I know that evaluation can be written as assessment)
'idiots on street collecting team' is the wordplay.
'idiots' becomes 'asses' (I've seen this before).
'on' means one lot of letters go next to another.
'street' becomes 'st' (abbreviation).
'collecting' means one lot of letters goes inside another.
'team' becomes 'men' (group of people).
'st' enclosing 'men' is 'sment'.
'asses'+'sment'='ASSESSMENT'
'of' is the link.
(Other definitions for assessment that I've seen before include "test" , "Review" , "amount to be paid" , "Judgement" , "Appraisal" .)