Crossword Genius

As tramps, OK to wander (3,5)

Ross

I believe the answer is:

top marks

'as' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'tramps ok to wander' is the wordplay.
'to wander' indicates an anagram.
'tramps'+'ok'='trampsok'
'trampsok' is an anagram of 'TOP MARKS'.

I've seen this clue in The Sunday Times and The Times.
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