Key ceremony and broadcast raised standards (8)
I believe the answer is:
criteria
'standards' is the definition.
('criterion' can be a synonym of 'standard')
'key ceremony and broadcast raised' is the wordplay.
'key' becomes 'c' (I've seen this in other clues**).
'ceremony' becomes 'rite' (rite is a kind of ceremony).
'and' is a charade indicator (letters next to each other).
'broadcast' becomes 'air' ('air' can be a synonym of 'broadcast').
'raised' is a reversal indicator.
'air' back-to-front is 'ria'.
'c'+'rite'+'ria'='CRITERIA'
(Other definitions for criteria that I've seen before include "Standards by which something can be judged" , "'Standards, reference points (8)'" , "Principles on which to base a judgment" , "Standards of judgement to be met" , "References points, standards" .)