Crossword Genius

Old morning's tests! (5)

Ross

I believe the answer is:

exams

'tests' is the definition.
('exam' can be a synonym of 'test')

'old morning's' is the wordplay.
'old' becomes 'ex' (prefix meaning former or onetime).
'morning's' becomes 'am's' (as in 12:00 AM).
'ex'+'ams'='EXAMS'

(Other definitions for exams that I've seen before include "Cut up writing" , "More than one test" , "School tests" , "Set of exercises evaluating knowledge (abbr)" , "Important tests" .)

I've seen this clue in the Sydney Morning Herald.
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