Studying at university behind town (7,2)

I believe the answer is:

reading up

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'town' is the definition.
I know nothing about this answer so I can't judge whether this works.

'studying at university behind' is the wordplay.
'studying' becomes 'reading' ('read' can be a synonym of 'study').
'at university' becomes 'up' (slang term meaning at university).
'behind' is a charade indicator (letters next to each other).
'reading'+'up'='READING UP'

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I've seen this clue in The Daily Express.

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