More than one nerd packs up (5)

I believe the answer is:

swots

'more than one nerd' is the definition.
('swot' can be a synonym of 'nerd')

'packs up' is the wordplay.
'packs' becomes 'stows' (stowing is a kind of packing).
'up' is a reversal indicator (in down clue: letters go upwards).
'stows' reversed gives 'SWOTS'.

(Another definition for swots that I've seen is " They study intensively".)

I've seen this clue in The Independent.

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